Syntax coloring for class fields is hard coded to blue. For example
In this case name and nickname syntax color appears as blue and there is no way to change it. It was working fine before (STS 2.5.0.RC1) by following the java syntax colors but now it isn't and there is no way to fix it, not even changing the colors in the java syntax color preferences.
It is really frustrating as I was using a dark background and with this bug I can't because it makes my code unreadable. I will keep using RC1 for the time being.