Yeah, two different layouts would be better that way. But for two different color schemes javascript would be worlds easier.
And that's a possibility for you Cid, if you like a certain layout but can't decide on the colors, you can always use the same layout with two or three color schemes that are selectable in the footer of every page. How many Final Fantasy sites offer that outside of their forums, huh?
EDIT:I have a question, how do ads play into this? Do contestants need to consider where they go in the layout and do they have any room in deciding where they go and what they are (i.e. banner ads vs. sidebar ads)?








