I've just registered with OpenOffice, so do not know if this has been addressed already.
I, along with a surprisingly large proportion (7%-10%) of the male population, struggle with Daltonism (colour-blindness). I have worked on print production and found very little sympathy for my condition - I suppose most of us avoid such circumstances. Consequently marketing & image-generators overlook this problem. I have seen bad examples using close tones, but even black print on red background can be unreadable. I would like this to be properly considered as you are offering the chance to become involved. With the variety of colour-blind conditions and severity, I don't think you will please all the people all the time, but at least amke the concession that other s/ware house don't. Who knows, you could revolutionise the world. Bill