I have a dictionary app where there is only one non-standard input character, the glottal, represented by U+02BC. Since most keyboards don’t have that character, I added it to the “Input Buttons” on the Language Details tab. Unfortunately, it looks like a smudge on the screen:
Is there any way that I can change the color of that button (or the background), to make it stick out a bit more? I’ve looked through all of the Styles, but haven’t found anything that seems to increase the contrast.