For anyone interested in a small tank bag I have discovered that the Hopnel fuel filler hatch bag for a GL1800 Goldwing works perfectly on the Valk fuel door, it also cuts down on sun glare off that chrome tank panel. I don't know about the blacked out versions but when the sun is in the right spot it is blinding.
Hey that's good news. I know what you mean about that darn chrome bezel! Wonder how much for the black one from Mother Honda...
Do you have a link to the tank bag? I tried Googling but all i came up with was a Hopnel tank bra.