Here is a cool before and after so far...
FYI...Never buy the Lowe's brand primer called American Tradition Tintable Color Primer. It was horrible. We had to take it back because it was way too watery. You can see in the photo below what it did to our walls...it looked more like a whitewash. When we returned it we got Zinsser's Bulls Eye Water-Base Interior Primer & Sealer and it covered the walls like a charm and we only had to do one coat of the primer and one coat of paint.