Thanks for sharing your idea, I appreciate it. At the moment it's possible, but a little cumbersome. You have to make a small script. Here is an example, it shows the *.zip files on the d: disk in white:
Title('Highlight')
Description('Highlight some files')
VolumeSelect
Name("d:")
VolumeActions
SetFileColor(FileName("*.zip"),All,255,255,255)
Pause()
VolumeEnd