Need a little more info. How old is the gun? Idea of how many rounds through it?
I would start with a disassemble, (look for any scrapping of parts), a good cleaning and some gun oil.
You can also go into your preferences and change it to Dimension. Not a cure for the white letters on a light background, but it gives you a different display.
Welcome to the forum from Florida.
Bobster & Husker88 are correct, you need to be a member here for 30 days and have 30 posts before you can post in the Marketplace threads.