That makes sense. Our problems are somewhat different. Do you need to deal with arbitrary combinations of foreground and background colors? For me this was the hardest problem to deal with because of subpixel antialiasing.
Yes, and I'm quite proud of how that turned out. It's using linear sRGB color space, so colors are blended with correct gamma, and dual source blending for the LCD subpixel stuff. It's all handled inside the graphics hardware; if you look at the code it's pretty simple and accessible.
