The bits of this structure can be directly reinterpreted as an integer-packed color which uses the SDL_PIXELFORMAT_RGBA32 format (SDL_PIXELFORMAT_ABGR8888 on little-endian systems and SDL_PIXELFORMAT_RGBA8888 on big-endian systems).
Defined in SDL_pixels.h
typedef struct SDL_Color
{
Uint8 r;
Uint8 g;
Uint8 b;
Uint8 a; } SDL_Color;