First of all... those are two very good questions... and I will try to help you out as best I can. On the first, yes, the end zones always look "pix-elated" for lack of a better word. Why that is... is totally beyond me...
As for the second question, yes, you can create any custom color you want/need, but you won't - as far as I know - be able to create a chrome helmet.
Which leads me to some things that I want to vent about...
Team Builder came out years ago, and in typical
EA fashion, they never did one thing to it to make it better. If your logo is big in a horizontal way, you can get some big logos, but if it's big in a vertical way - as in the
Chargers lightning bolt or the
Vikings horn - you're screwed. The logo is small and looks like crap. And this I don't understand, there are a lot of high school teams using the
Vikings/
Chargers logos...
As far as the end zone text, again, this is another thing that is unacceptable. That and the fact that your helmet is always so plain - no
American flag or
NCAA logo, nothing on the flap above the forehead, no numbers on the back... you just get a boring, plain helmet.
Something that could have been so great, but
EA just ignored it and let it reside in the town of mediocrity since it came out.