Oh man, so hilarious you should mention that!!! That has been driving me crazy since I was a child. I used to wonder why every halloween Batman costume always looked lame until I figured it out, eye makeup.
I am a huuuuuuge Batman fan, I`ve watched everything since Lewis Wilson to Bale`s grumpy marble chewing crusader. And a moment I`ll always cherish is when Michael Keaton removes his mask at the end of Batman Returns to show Selina Kyle to try to convince her to stop. The funny thing is that you can see all throughout the movie that he is wearing the famous eye makeup, but in that shot, just before he removes the mast, he is not (the make up has magically dissapeared) so that only his clean face is showing when he takes out the mask.
Anyway I thought it was funny how they thought a black eye batman would be totally lame and to resource to such a cheap trick, specially from Burton who was considered a good director at the time.
Keep up the awesome work, Long live Waluigi!!!!