Not sure something like this is possible, but being able to set specific words to be highlighted in different colors would be a nice addition. For instance, when searching for movie files, being able to highlight the resolution in a filename (1080p in blue and 2160p in green, or whatever).
With how the files are displayed in Everything as well as having access to the normal context menu for files, it makes me think you might be using an embedded explorer.exe in some fashion, so highlighting might not be possible. But I wanted to suggest it just in case.