Hoping that it will step on no one's toes if I just be bold and "announce" a colour scheme so that we're all on the same page. My idea was essentially to just to introduce a lot of greys in order to emphasise the morally ambiguous nature of the wiki topic. I've also included a tiny bit of color that's based upon the gold, silver and bronze medals of which these athletes are commonly stripped — but the colours are fairly desaturated, and even slightly ugly. Again, the idea is to have the colors immediately suggest that something is "off".
Here's a chart of color numbers, as well as a link to a page where you can see them all laid out more graphically for you:
##### Color Palette by Color Scheme Designer
##### Palette URL: colorschemedesigner.com/#1q51T1hsHK-K-
##### Color Space: RGB;
*** Primary Color:
var. 1 = #E5E3DC = rgb(229,227,220)
var. 2 = #8F8E8B = rgb(143,142,139)
var. 3 = #6D5E1A = rgb(109,94,26)
var. 4 = #F8F7F2 = rgb(248,247,242)
var. 5 = #F8F8F5 = rgb(248,248,245)
*** Secondary Color A:
var. 1 = #E5E5DC = rgb(229,229,220)
var. 2 = #8F8F8B = rgb(143,143,139)
var. 3 = #6D6D1A = rgb(109,109,26)
var. 4 = #F8F8F2 = rgb(248,248,242)
var. 5 = #F8F8F5 = rgb(248,248,245)
*** Secondary Color B:
var. 1 = #E5E2DC = rgb(229,226,220)
var. 2 = #8F8E8B = rgb(143,142,139)
var. 3 = #6D511A = rgb(109,81,26)
var. 4 = #F8F6F2 = rgb(248,246,242)
var. 5 = #F8F7F5 = rgb(248,247,245)
##### Generated by Color Scheme Designer (c) Petr Stanicek 2002-2010