Change element to a page

Hi with the chrome debugger i was able to find the element i want to change but even with the add css i am not able to change the color i want.

The element is a u

This is what i get from chrome

#top .all_colors u, #top .all_colors span[style*=’text-decoration: underline;’], #top .all_colors span[style*=’text-decoration:underline;’] {
color: #719430;

i want to change the color to #92278f

Thanks