I painted mine flat black and then bought some 5/16? fuel line from AutoZone, slit it the full length with a razor and glued it to the trailing edge with 3M 1099. I think it looks pretty snappy.
As for bare vs having the shield, I highly recommend it. It does exactly what its purpose is - keeps the glare off of the panel displays, most notably during daylight when the sun is to the side or behind you.