CSS class for vote results.

Hello.

Im tryng to achieve a simple task, i have my settings this way:

So on every comment there is the following layout:

What i need now is to apply a red color, or a green color to the orange circle of vote results, i can do it in css, but im not able to find any specific css class for this task, i need two diferent ones, one that applys when the comment result is possitive, and other one for negative results so i can achieve this. Does them exists? do i need to add them? Where?

Thanks