I've got a pending sale for mine in similar condition at $4900 WITH the color DMD! Maybe I let mine go a little too cheap. In any case, the color DMD is a game changer in Road Show. It helps you see what the animations are actually supposed to be. In plain amber, I couldn't differentiate what was going on.
As others said, it won't add much to the value beyond the cost of the DMD. But if you plan to keep it for a bit, you will enjoy the play much more!