star reviews

hi, I need help with this theme it’s a little frustrating. I try to make my star reviews yellow. the only way ive been able to do this is by selecting appearance then going to the general and then colour. but it doesn’t just change the star reviews it changes the product description title to the same colour as well, the with search and logout button. which I wanted to keep the same colour to marron #800000 hex code. i just wanted the yellow/gold star colour. is there a CSS code