In TsDBNavigator, disabled buttons in a dark skin are invisible. However, in TcxDBNavigator these buttons really stand out, because the dimming is incorrectly skinned.
Disabled glyphs are drawn as alphablended in the TsDBNavigator component, I don't know how to make it better.
Glyphs in DevExpress extracted from resources and painted by DevExpress, I don't know how to change them…
I looked into it. I don't see how you can change the images either. Only the TcxNavigator.Buttons.Images gives the possibility to create custom images. But they should not be used by AC for obvious reasons.