Attached Link: http://www.renderosity.com/messages.ez?ForumID=12356&Form.ShowMessage=636202

BUM files simply give bumps. They raise portions up. geep had a good explanation of what a BUM map does. To create colors, you need to create a texture map. I hope this answers your question. http://www.renderosity.com/messages.ez?ForumID=12356&Form.ShowMessage=636202