Pale yellow background highlight makes text unreadable when dark background scheme is used in IDE

I'm using a light-on-dark color scheme in the IDE. When I click on an
identifier, all instances of it are given a pale yellow background. I
get white text on pale yellow that I can't read.

I've been all through the global and language-specific colors I can
change, but I cannot locate this pale yellow one. Can anyone help?

This must have been asked before, since it's so incredibly annoying, but
I was not able to find a reply. Is there a regular bulletin board or a
GoogleGroup where I could ask questions? This mailing list seems a bit
awkward.

This happens to me in both the Java and PHP versions of the IDE. I'm
using the color scheme "Norway Today."