You don't use yellow in it. Color codes go like this:
The max you can have in an RGB color code is 255 for each and then there's A which stands for Alpha, that is Transparency. I'm not sure if you can use transparency for your people so well just stick with RGB.
Use you're imagination on combining different combination's of these colors. But if you don't know:
The less intensity of each color, the darker the output will be. The more intensity of each color, the lighter and more "noticeable" (for lack of a better word, I can't remember it right now) and if you have all the colors set to the same intensity, you will get a color on the gray scale. Here, I'll give you the Gray scale section of my color set:
255 255 255 255 // White
224 224 224 255 // Gray
192 192 192 255 // Gray
160 160 160 255 // Gray
128 128 128 255 // Gray
96 96 96 255 // Gray
64 64 64 255 // Gray
32 32 32 255 // Gray
0 0 0 255 // Black
DIV: Milk's Grayscale
If this doesn't help you, you are an idiot.
