You can pick any color or colors, and screen them between 10 percent and 100 percent. Maybe this website could let people choose whatever color intensity their peculiarities of eyesight can take. I like this light green, dark green thema, but have thought of changing it. Maybe red or pink with black or gray, together with that red and pink picture of Hikki roaring into view like a cloud on fire? Nowadays, people's computers have 64 million color choices. The options are infinite. Does color have to be server based or webpage based, I wonder? You are asking for trouble when you give such controls to client computer connections, but I think it could be devolved to each node or fan, the choice of color theme.