I\'ve been searching for about 40 minutes now and this is just so frustrating...
The standard search result background color in eclipse is freaking white and black. Ever
I have also found, if you are looking at C++ code (at least in Eclipse Mars 2), changing the following option will set the highlight color of all occurrences of your current (or most recent) search, in case this is what you are looking for:
General->Editors->Text Editors->Annotations->C/C++ Occurrences
Why oh why this is not in the C++ preferences pane I will never know.