Is there a way to change the highlighting color when searching within a book? Currently it is a very light pink that is hard to see.
Chris...
no, there is not.
The only thing that might help is to turn the gamma down on your video card or if you don't want to do that you could do the following inside L4:
on whatever search you are doing, turn it into a visual filter that is much easier to see....that is, after you search click the button called "create visual filter" and choose some color scheme that is easier to see.