I would love to see pictures! What about Dust Off, the spray can for keyboards and stuff?

The problem is that the dust that collects on top of the glass always shows when lit. You may have to get up there (?) and clean them by hand. I've tried all those other methods too.

Hmmm, sounds like one of those things where old-fashioned hand-cleaning is your best bet. All the new gadgets and solutions may not cut it.

I suspect there may be a "static" charge as well which makes "blowing" the dust off with an air compressor pretty useless as well....

If it is not too dusty, put newspapers underneath, and spray window cleaner over the glass and let it drip clean. You may have to help it a bit by wiping if it is too dusty. I have a mixture that I make by the gallon that cleans everything and is mild enough to use everywhere and it doesn't leave residue.