Calling set_color_depth without resetting graphic mode.

Description

Calling set_color_depth without resetting graphic mode.
set_color_depth() tells Allegro which color depth to use the next time a graphic mode is set or bitmap is created or loaded. It doesn't change the color depth of the current graphic mode or existing bitmaps. You need to be sure that all your bitmaps and/or graphic mode are in the same color depth or Allegro will be forced to do slow color conversions between them.