diff --git a/src/core.c b/src/core.c
index 1eb39bf6c..94e3fcaa2 100644
--- a/src/core.c
+++ b/src/core.c
@@ -1210,9 +1210,9 @@ const char *GetOS(void)
 void Execute(const char *command)
 {
     #ifdef __ANDROID__ || TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR || TARGET_OS_EMBEDDED
-        return NULL;
+        return -1;
     #else
-        system(command);
+        return system(command);
     #endif
 }
 
diff --git a/src/raylib.h b/src/raylib.h
index 00c640141..53ad970a0 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -125,33 +125,155 @@
 
 // Some Basic Colors
 // NOTE: Custom raylib color palette for amazing visuals on WHITE background
-#define LIGHTGRAY  CLITERAL(Color){ 200, 200, 200, 255 }   // Light Gray
-#define GRAY       CLITERAL(Color){ 130, 130, 130, 255 }   // Gray
-#define DARKGRAY   CLITERAL(Color){ 80, 80, 80, 255 }      // Dark Gray
-#define YELLOW     CLITERAL(Color){ 253, 249, 0, 255 }     // Yellow
-#define GOLD       CLITERAL(Color){ 255, 203, 0, 255 }     // Gold
-#define ORANGE     CLITERAL(Color){ 255, 161, 0, 255 }     // Orange
-#define PINK       CLITERAL(Color){ 255, 109, 194, 255 }   // Pink
-#define RED        CLITERAL(Color){ 230, 41, 55, 255 }     // Red
-#define MAROON     CLITERAL(Color){ 190, 33, 55, 255 }     // Maroon
-#define GREEN      CLITERAL(Color){ 0, 228, 48, 255 }      // Green
-#define LIME       CLITERAL(Color){ 0, 158, 47, 255 }      // Lime
-#define DARKGREEN  CLITERAL(Color){ 0, 117, 44, 255 }      // Dark Green
-#define SKYBLUE    CLITERAL(Color){ 102, 191, 255, 255 }   // Sky Blue
-#define BLUE       CLITERAL(Color){ 0, 121, 241, 255 }     // Blue
-#define DARKBLUE   CLITERAL(Color){ 0, 82, 172, 255 }      // Dark Blue
-#define PURPLE     CLITERAL(Color){ 200, 122, 255, 255 }   // Purple
-#define VIOLET     CLITERAL(Color){ 135, 60, 190, 255 }    // Violet
-#define DARKPURPLE CLITERAL(Color){ 112, 31, 126, 255 }    // Dark Purple
-#define BEIGE      CLITERAL(Color){ 211, 176, 131, 255 }   // Beige
-#define BROWN      CLITERAL(Color){ 127, 106, 79, 255 }    // Brown
-#define DARKBROWN  CLITERAL(Color){ 76, 63, 47, 255 }      // Dark Brown
+#define LIGHTGRAY  CLITERAL(Color){ 200, 200, 200, 255 }            // Light Gray
+#define GRAY       CLITERAL(Color){ 130, 130, 130, 255 }            // Gray
+#define DARKGRAY   CLITERAL(Color){ 80, 80, 80, 255 }               // Dark Gray
+#define YELLOW     CLITERAL(Color){ 253, 249, 0, 255 }              // Yellow
+#define GOLD       CLITERAL(Color){ 255, 203, 0, 255 }              // Gold
+#define ORANGE     CLITERAL(Color){ 255, 161, 0, 255 }              // Orange
+#define PINK       CLITERAL(Color){ 255, 109, 194, 255 }            // Pink
+#define RED        CLITERAL(Color){ 230, 41, 55, 255 }              // Red
+#define MAROON     CLITERAL(Color){ 190, 33, 55, 255 }              // Maroon
+#define GREEN      CLITERAL(Color){ 0, 228, 48, 255 }               // Green
+#define LIME       CLITERAL(Color){ 0, 158, 47, 255 }               // Lime
+#define DARKGREEN  CLITERAL(Color){ 0, 117, 44, 255 }               // Dark Green
+#define SKYBLUE    CLITERAL(Color){ 102, 191, 255, 255 }            // Sky Blue
+#define BLUE       CLITERAL(Color){ 0, 121, 241, 255 }              // Blue
+#define DARKBLUE   CLITERAL(Color){ 0, 82, 172, 255 }               // Dark Blue
+#define PURPLE     CLITERAL(Color){ 200, 122, 255, 255 }            // Purple
+#define VIOLET     CLITERAL(Color){ 135, 60, 190, 255 }             // Violet
+#define DARKPURPLE CLITERAL(Color){ 112, 31, 126, 255 }             // Dark Purple
+#define BEIGE      CLITERAL(Color){ 211, 176, 131, 255 }            // Beige
+#define BROWN      CLITERAL(Color){ 127, 106, 79, 255 }             // Brown
+#define DARKBROWN  CLITERAL(Color){ 76, 63, 47, 255 }               // Dark Brown
+#define WHITE      CLITERAL(Color){ 255, 255, 255, 255 }            // White
+#define BLACK      CLITERAL(Color){ 0, 0, 0, 255 }                  // Black
+#define BLANK      CLITERAL(Color){ 0, 0, 0, 0 }                    // Blank (Transparent)
+#define MAGENTA    CLITERAL(Color){ 255, 0, 255, 255 }              // Magenta
+#define RAYWHITE   CLITERAL(Color){ 245, 245, 245, 255 }            // My own White (raylib logo)
 
-#define WHITE      CLITERAL(Color){ 255, 255, 255, 255 }   // White
-#define BLACK      CLITERAL(Color){ 0, 0, 0, 255 }         // Black
-#define BLANK      CLITERAL(Color){ 0, 0, 0, 0 }           // Blank (Transparent)
-#define MAGENTA    CLITERAL(Color){ 255, 0, 255, 255 }     // Magenta
-#define RAYWHITE   CLITERAL(Color){ 245, 245, 245, 255 }   // My own White (raylib logo)
+// Colors added by github user Rabios as fork
+#define OLIVE      CLITERAL(Color){ 128, 128, 0, 255 }               // Olive
+#define SILVER     CLITERAL(Color){ 192, 192, 192, 255 }             // Silver
+#define MAROON     CLITERAL(Color){ 128, 0, 0, 255 }                 // Maroon
+#define TEAL       CLITERAL(Color){ 0, 128, 128, 255 }               // Teal
+#define NAVY       CLITERAL(Color){ 0, 0, 128, 255 }                 // Navy
+#define DARKRED    CLITERAL(Color){ 139, 0, 0, 255 }                 // Dark red
+#define FIREBRICK  CLITERAL(Color){ 178, 34, 34, 255 }               // Firebrick
+#define CRIMSON    CLITERAL(Color){ 220, 20, 60, 255 }               // Crimson
+#define TOMATO     CLITERAL(Color){ 255, 99, 71, 255 }               // Tomato
+#define CORAL      CLITERAL(Color){ 255, 127, 80, 255 }              // Coral
+#define INDIANRED  CLITERAL(Color){ 205, 92, 92, 255 }               // Indian Red
+#define LIGHTCORAL CLITERAL(Color){ 240, 128, 128, 255 }             // Light Coral
+#define DARKSALMON CLITERAL(Color){ 230, 150, 122, 255 }             // Dark Salmon
+#define SALMON     CLITERAL(Color){ 250, 128, 114, 255 }             // Salmon
+#define LIGHTSALMON CLITERAL(Color){ 255, 160, 122, 255 }            // Light Salmon
+#define ORANGERED  CLITERAL(Color){ 255, 69, 0, 255 }                // Orange Red
+#define DARKORANGE CLITERAL(Color){ 255, 140, 0, 255 }               // Dark Orange
+#define DARKGOLDENROD CLITERAL(Color){ 184, 134, 11, 255 }           // Dark Golden Rod
+#define GOLDENROD  CLITERAL(Color){ 218, 165, 32, 255 }              // Golden Rod
+#define PALEGOLDENROD CLITERAL(Color){ 238, 232, 170, 255 }          // Pale Golden Rod
+#define DARKKHAKI  CLITERAL(Color){ 189, 183, 107, 255 }             // Dark Khaki
+#define KHAKI      CLITERAL(Color){ 240, 230, 140, 255 }             // Khaki
+#define YELLOWGREEN CLITERAL(Color){ 154, 205, 50, 255 }             // Yellow Green
+#define DARKOLIVEGREEN CLITERAL(Color){ 85, 107, 47, 255 }           // Dark Olive Green
+#define OLIVEDRAB  CLITERAL(Color){ 107, 142, 35, 255 }              // Olive Drab
+#define LAWNGREEN  CLITERAL(Color){ 124, 252, 0, 255 }               // Lawn Green
+#define CHARTREUSE CLITERAL(Color){ 127, 255, 0, 255 }               // Chart Reuse
+#define GREENYELLOW CLITERAL(Color){ 173, 255, 47, 255 }             // Green Yellow
+#define FORESTGREEN CLITERAL(Color){ 34, 139, 34, 255 }              // Forest Green
+#define LIMEGREEN  CLITERAL(Color){ 50, 205, 50, 255 }               // Lime Green
+#define LIGHTGREEN CLITERAL(Color){ 144, 238, 144, 255 }             // Light Green
+#define PALEGREEN  CLITERAL(Color){ 152, 251, 152, 255 }             // Pale Green
+#define DARKSEAGREEN CLITERAL(Color){ 143, 188, 143, 255 }           // Dark Sea Green
+#define MEDIUMSPRINGGREEN CLITERAL(Color){ 0, 250, 154, 255 }        // Medium Spring Green
+#define SPRINGGREEN CLITERAL(Color){ 0, 255, 127, 255 }              // Spring Green
+#define SEAGREEN   CLITERAL(Color){ 46, 139, 87, 255 }               // Sea Green
+#define MEDIUMAQUAMARINE CLITERAL(Color){ 102, 205, 170, 255 }       // Medium Aqua Marine
+#define MEDIUMSEAGREEN CLITERAL(Color){ 60, 179, 113, 255 }          // Medium Sea Green
+#define LIGHTSEAGREEN CLITERAL(Color){ 32, 178, 170, 255 }           // Light Sea Green
+#define DARKSLATEGRAY CLITERAL(Color){ 47, 79, 79, 255 }             // Dark Slate Gray
+#define DARKCYAN  CLITERAL(Color){ 0, 139, 139, 255 }                // Dark Cyan
+#define AQUA      CLITERAL(Color){ 0, 255, 255, 255 }                // Aqua
+#define CYAN      CLITERAL(Color){ 0, 255, 255, 255 }                // Cyan
+#define LIGHTCYAN CLITERAL(Color){ 225, 255, 255, 255 }              // Light Cyan
+#define DARKTURQUOISE CLITERAL(Color){ 64, 206, 209, 255 }           // Dark Turquoise
+#define TURQUOISE CLITERAL(Color){ 64, 224, 208, 255 }               // Turquoise
+#define MEDIUMTURQUOISE CLITERAL(Color){ 72, 209, 204, 255 }         // Medium Turquoise
+#define PALETURQUOISE CLITERAL(Color){ 175, 238, 238, 255 }          // Pale Turquoise
+#define AQUAMARINE CLITERAL(Color){ 127, 255, 212, 255 }             // Aqua Marine
+#define POWDERBLUE CLITERAL(Color){ 176, 224, 230, 255 }             // Powder Blue
+#define CADETBLUE CLITERAL(Color){ 95, 158, 160, 255 }               // Cadet Blue
+#define STEELBLUE CLITERAL(Color){ 70, 130, 180, 255 }               // Steel Blue
+#define CORNFLOWERBLUE CLITERAL(Color){ 100, 149, 237, 255 }         // Cornflower Blue
+#define DEEPSKYBLUE CLITERAL(Color){ 0, 191, 255, 255 }              // Deep Sky Blue
+#define DODGERBLUE CLITERAL(Color){ 30, 144, 255, 255 }              // Dodger Blue
+#define LIGHTBLUE CLITERAL(Color){ 173, 216, 230, 255 }              // Light Blue
+#define LIGHTSKYBLUE CLITERAL(Color){ 135, 206, 250, 255 }           // Light Sky Blue
+#define MIDNIGHTBLUE CLITERAL(Color){ 25, 25, 112, 255 }             // Midnight Blue
+#define MEDIUMBLUE CLITERAL(Color){ 0, 0, 205, 255 }                 // Medium Blue
+#define ROYALBLUE CLITERAL(Color){ 65, 105, 225, 255 }               // Royal Blue
+#define BLUEVIOLET CLITERAL(Color){ 138, 43, 226, 255 }              // Blue Violet
+#define INDIGO    CLITERAL(Color){ 75, 0, 130, 255 }                 // Indigo
+#define DARKSLATEBLUE CLITERAL(Color){ 72, 61, 139, 255 }            // Dark Slate Blue
+#define SLATEBLUE CLITERAL(Color){ 106, 90, 205, 255 }               // Slate Blue
+#define MEDIUMSLATEBLUE CLITERAL(Color){ 123, 104, 238, 255 }        // Medium Slate Blue
+#define MEDIUMPURPLE CLITERAL(Color){ 147, 112, 219, 255 }           // Medium Purple
+#define DARKMAGENTA CLITERAL(Color){ 139, 0, 139, 255 }              // Dark Magenta
+#define DARKVIOLET CLITERAL(Color){ 148, 0, 211, 255 }               // Dark Violet
+#define DARKORCHID CLITERAL(Color){ 153, 50, 204, 255 }              // Dark Orchid
+#define MEDIUMORCHID CLITERAL(Color){ 186, 85, 211, 255 }            // Medium Orchid
+#define THISTLE    CLITERAL(Color){ 216, 191, 216, 255 }             // Thistle
+#define PLUM       CLITERAL(Color){ 221, 160, 221, 255 }             // Plum
+#define FUSCHIA    CLITERAL(Color){ 255, 0, 255, 255 }               // Fuschia
+#define ORCHID     CLITERAL(Color){ 218, 112, 214, 255 }             // Orchid
+#define MEDIUMVIOLETRED CLITERAL(Color){ 199, 21, 133, 255 }         // Medium Violet Red
+#define PALEVIOLETRED CLITERAL(Color){ 219, 112, 147, 255 }          // Pale Violet Red
+#define DEEPPINK   CLITERAL(Color){ 255, 20, 147, 255 }              // Deep Pink
+#define HOTPINK    CLITERAL(Color){ 255, 105, 180, 255 }             // Hot Pink
+#define LIGHTBLUE  CLITERAL(Color){ 255, 182, 193, 255 }             // Light Blue
+#define ANTIQUEWHITE CLITERAL(Color){ 250, 235, 215, 255 }           // Antique White
+#define BISQUE     CLITERAL(Color){ 255, 228, 196, 255 }             // Bisque
+#define BLANCHEDALMOND CLITERAL(Color){ 255, 235, 205, 255 }         // Blanched Almond
+#define WHEAT      CLITERAL(Color){ 245, 222, 179, 255 }             // Wheat
+#define CORNSILK   CLITERAL(Color){ 255, 248, 220, 255 }             // Corn Silk
+#define LEMONSHIFFON CLITERAL(Color){ 255, 250, 205, 255 }           // Lemon Shiffon
+#define LIGHTGOLDENRODYELLOW CLITERAL(Color){ 250, 250, 210, 255 }   // Light Golden Rod Yellow
+#define LIGHTYELLOW CLITERAL(Color){ 255, 255, 224, 255 }            // Light Yellow
+#define SADDLEBROWN CLITERAL(Color){ 139, 69, 19, 255 }              // Saddle Brown
+#define SIENNA     CLITERAL(Color){ 160, 82, 45, 255 }               // Sienna
+#define CHOCOLATE  CLITERAL(Color){ 210, 105, 30, 255 }              // Chocolate
+#define PERU       CLITERAL(Color){ 205, 133, 63, 255 }              // Peru
+#define SANDYBROWN CLITERAL(Color){ 244, 164, 96, 255 }              // Sandy Brown
+#define BURLYWOOD  CLITERAL(Color){ 222, 184, 135, 255 }             // Burly Wood
+#define TAN        CLITERAL(Color){ 210, 180, 140, 255 }             // Tan
+#define ROSYBROWN  CLITERAL(Color){ 188, 143, 143, 255 }             // Rosy Brown
+#define MOCCASIN   CLITERAL(Color){ 255, 228, 181, 255 }             // Moccasin
+#define NAVAJOWHITE CLITERAL(Color){ 255, 228, 181, 255 }            // Navajo White
+#define PEACHPUFF  CLITERAL(Color){ 255, 218, 185, 255 }             // Peach Puff
+#define MISTYROSE  CLITERAL(Color){ 255, 228, 225, 255 }             // Misty Rose
+#define LAVENDERBLUSH CLITERAL(Color){ 255, 240, 245, 255 }          // Lavender Blush
+#define LINEN      CLITERAL(Color){ 250, 240, 230, 255 }             // Linen
+#define OLDLACE    CLITERAL(Color){ 253, 245, 230, 255 }             // Old Lace
+#define PAPAYAWHIP CLITERAL(Color){ 255, 239, 213, 255 }             // Papaya Whip
+#define SEASHELL   CLITERAL(Color){ 255, 248, 238, 255 }             // Sea Shell
+#define MINTCREAM  CLITERAL(Color){ 245, 255, 250, 255 }             // Mint Cream
+#define SLATEGRAY  CLITERAL(Color){ 112, 128, 144, 255 }             // Slate Gray
+#define LIGHTSLATEGRAY CLITERAL(Color){ 119, 136, 153, 255 }         // Light Slate Gray
+#define LIGHTSTEELBLUE CLITERAL(Color){ 176, 196, 222, 255 }         // Light Steel Blue
+#define LAVENDER   CLITERAL(Color){ 230, 230, 250, 255 }             // Lavender
+#define FLORALWHITE CLITERAL(Color){ 255, 250, 240, 255 }            // Floral White
+#define ALICEBLUE  CLITERAL(Color){ 240, 248, 255, 255 }             // Alice Blue
+#define GHOSTWHITE CLITERAL(Color){ 248, 248, 255, 255 }             // Ghost White
+#define HONEYDEW   CLITERAL(Color){ 240, 255, 240, 255 }             // Honeydew
+#define IVORY      CLITERAL(Color){ 255, 255, 240, 255 }             // Ivory
+#define AZURE      CLITERAL(Color){ 240, 255, 255, 255 }             // Azure
+#define SNOW       CLITERAL(Color){ 255, 250, 250, 255 }             // Snow 
+#define DIMGRAY    CLITERAL(Color){ 105, 105, 105, 255 }             // Dim Gray
+#define DARKGRAY   CLITERAL(Color){ 169, 169, 169, 255 }             // Dark Gray
+#define LIGHTGRAY  CLITERAL(Color){ 211, 211, 211, 255 }             // Light Gray
+#define GAINSBORO  CLITERAL(Color){ 220, 220, 220, 255 }             // Gainsboro
+#define WHITESMOKE CLITERAL(Color){ 245, 245, 245, 255 }             // White Smoke
 
 // Temporal hack to avoid breaking old codebases using
 // deprecated raylib implementation of these functions