Simple Social Icons – Icons not showing

I have tried 2 different child themes so I know that is not the issue but for some reason the social icons from the Social Simple plugin are not showing. They are there (on in the top right nav bar & down at the bottom in the footer) but they won’t actually show the color I have made them.

Can anyone please let me know how to fix this problem?

The page I need help with: [log in to see the link]