Help me change my sidebar text color!

Here is what my code looks like for my sidebar (see below). I messed with it a bit but couldn’t figure out how to change the color of my text in my sidebar, specifically the titles “The Latest from Montana Wild” and “Subscribe to our blog” on my website here. I’d simply like to change them from a light gray to solid white. Any help would be greatly appreciated.

[CSS moderated as per the Forum Rules. Please just post a link to your site.]