Clear glass shows any issues with the glue or lams, but I have never seen one with an issue. Black and white are more traditional colors as early clear glass was not as reliable as solid colors. That issue is long since gone. Hunting bows used to be made with black, brown or green glass while target bows had white glass. The white glass helped keep the limbs form heating up in the summer sun when outdoor tournaments were held.
If you are getting a nice looking wood for the limbs, get the clear glass. If it is just maple, save a few bucks and go with black.