Agree with Jason.

If you start calling down more post flop then naturally you'll be folding less (helping red line) but you're going to showdown with a weaker range (lose more at showdown, making blue line worse).

Changing the red line does not necessarily mean your blue line stays the same. Its not as simple as "oh look my redline is negative so if I make it less negative/make it positive I'll make more money!!"