Success! The search match color can now be specified in the style scheme.
Text editor (gedit) is quite good with a dark theme. One thing that might be necessary with a dark background like this is to change the color of the colored text. This is done through menus and is quite easy. That's all right for me! :)
However, there's one minor annoyance, again having to do with a yellow highlight: When you search, it highlights the words, yet when it does so, white text is invisible:
Overall, once again, four stars!
let's see what the devs can do ;)