About the colors: of course we can change the colors later, however I suggest to decide on the colors before I'd send you the additional files. Once you've choosen the winner design I can show you different color schemes, so you can decide which colors you really love.
In addition to the two final files (EPS and JPG, will be downloaded from LogoTournament), later I'll send you the additional files by e-mail (PDF, EPS, JPG, PNG files for web, PSD isolated background, TIF), in different color modes for different products, such as flyers, brochures, promotional items, T-shirts, advertisments, etc. – these files have no extra costs.
I hope this helps :)