Hello! Thanks for the reply. GSI = Gunze Sangyo Creos.
They make the Mr Color series paints. I use Mr Thinner (lacquer thinner) as the cleaning agent for my brushes.
I test-painted some Mr Metal Color 212 (Dark Iron) and 214 (Iron) yesterday. It needs to be buffed to bring out the shine. It's really good -- thin and easy to paint; I'm not sure about how long the shine lasts though, because the last time I used some Mr Metal Color Bronze on my boat screws, and buffed them shiny, but after a while the shine disappeared.