CSS - can't change font color

Stuck. Using a stylesheet, I can change the background color, but the font color will not budge. Ultimately I’m trying to change the hover color, but even - just to test - I can’t change the actual color. I can change it with a developer tool in my browser, but as soon as I try in the bb stylesheet, no go. I’ve tried assigning an id, and a class to a specific block to test and nothing. Again, just the font color. I can change the background of the font, but not the font color itself.

This is with the Callout module.

Thoughts?

Can you share your CSS code and page URL?