SDL_Color.
| ubyte r | Red value in range 0 - 255 |
| ubyte g | Green value in range 0 - 255 |
| ubyte b | Blue value in range 0 - 255 |
| int hex | integer in RGB byte order |
| int hex | integer in BGR byte order |
| double hue | Hue in range 0 - 1 |
| double saturation | Saturation in range 0 - 1 |
| double lightness | Lightness in range 0 - 1 |
this.