Progress bar styles were bleeding out and refreshing every frame.
I noticed this in style editor where it wouldn't let me revert the PlotHistogram color unless i closed AlphaBuff.
you could even force it to change color by removing buffs.
* Converted the barcolor variable into a table to hold the values.
* Instead of having barColor function return the PushStyleColor, we just return the values. and plug them back into the PustStyleColor into ImVec4.
This allows us to only change the color when actually drawing the bar and Popping it after it is drawn.