System Restore Question

Hi:
I used System Restore in my attempt to keep the same Vista enviroment which
is crisp and large font along with VERY nice color.

However, next day when Vista opened up, the screen is back to the screen
prior to System Restore that has dingy color, smudgy font that I really hate
it.

My question is;
How to keep the same Vista that has nice color with crisp and large font?

Thanks for your help in advance.