I am not color blind, nor do I have an old computer, but I am finding almost impossible to tell red from orange from pink in the new color scheme.
I agree with those who said that option "B" is the best. I tried using widow's color changer, but hadn't much luck .. and don't have the time to really play around.
I would like to see you keep grey as nuetral -- being consistant is a big benefit.
However, why not introduce black and maybe something purple. You would need to watch the blue/red tones to make sure it doesn't clash, but it should work. that is, Black, red, blue, bright green, bright yellow, teal/turqoise, either bright orange or more of a "peachy" orange (and no pink) OR pink, bright "lilac" purple. If you want to go brown, I would suggest a tan/ beige, but with care to keep it separate from the orange and/or pink.
Hope this helps... if not just ignore it.
