Hey Sausage, You are catching it left and right about that tank. But I have to be honest, I'm glad you haven't painted it yet. I know, I'm sorry. I realize you've had your heart set, but man with the mods you've done and that tank (in all its patina glory) just look sick!!
Just think of it this way, anyone can paint black, but very few, if any, would have a bike like that. It's not that we are all trying to 'save a retro', but instead, I think it's that as this thing is comming together, it is taking on a certain look of its own, and that tank is the icing on the cake. However, if painted black, it may look like alot of other bikes out there. I think this is what most of us are thinking.
With that said, if you paint it, that's cool too! It's your bike. I'm sure I've made a few people cringe at some of the stuff I've done on mine ;D But thats ok because it's my bike and I look at it like art. Its what makes you happy. You are the one that is going to be riding this thing around. So its ok to tell me to piss off ;D