# A.4 Button Bar Icons Missing or Obscure

Why are Button Bar icons missing or obscure?

On systems restricted to 256 colors, it's not possible to display all colors on button faces. In this case, Windows chooses the closest matching color, which may be the same as the buttons background color. When this occurs the Button Bar icon may be obscured or appear to be missing.

In cases where Layer Buttons are affected the number on the button may not be visible. Although it may not be possible to view the layer number, the correct color will be used to color objects that appear on the layer.