I think it's important to consider what was meant in the spirit of the theme, rather than rigid adherence to the first post.
My entry (likely to not be finished in time), is supposed to be an alternate livery for a car that raced in 2010. Even though the livery and the design will just be black and white, it needs a German flag on the bonnet along side the number boards, and class stickers. It's clearly not an attempt to circumvent the rules or improve the design by flaunting the rules, but would be required for the livery to look authentic - it's in the spirit of the theme, even if it's not technically within the rules.
Anyway, as has been pointed out, questioning something is fair enough, but it needs to be done in enough time to sort out, and if something makes it to the poll you don't think is valid, then of course don't vote for it.
Since we're talking about rules. I'm pretty sure there's still image manipulation going on with some entries (when I say I'm pretty sure, I mean I have a technique that I've not been able to demonstrate is falsifiable, so some definitely are)... that's about keeping a level playing field and people should keep it in mind.