Changing the link color

All,
I am making changes to a theme and I have been doing pretty good, but I can’t figure out how to make link color changes to it.

The blog is here: https://blog.workvirtualcoach.com/

The area where I want to make the link color changes are in the top 3 boxes with the headings: Upcoming Teleseminars, Monthly Newsletters, & Sponsors.

The color of the links in that area is bright green and I want to change it to some other color.

I tried to find where to change this in the style sheet and I can’t figure it out.

Can someone help me figure out where to go to change those colors?

Anyone help will surely be appreciated!!!