Re: '75 CB550 - Gulf racing scheme
The amounts will depend alot on how you are painting it. If you are going a base/ clear on the bodywork only, then a pint of each color should do it all. The clear only comes in quarts from most places, and then you will need the hardener to go with it. If you base clear the frame (which I wouldn't do, for maintenance reasons) then you will probably need another pint of orange.
The single stage paints are fine (like catalyzed acrylic enamel), except in the metallics which are short lived. I don't think they have the depth or repairability of a clear coated paint, since when you are buffing on them, you are taking color away as well. And, when they oxidize, it is the actual color that you are losing. The base clear paints seem to be more weather/ sun proof.
But I would use a single stage for the frame at least. It will be much more repairable in the event of scratches or rock chips that have to be touched up, and where gloss is not a big a factor.
If you are going to go all one or the other, I think I would go all enamel instead of all base clear. But I would much prefer base/ clear on the bodywork. Also, with those colors, I would check at the powder coaters. They should be able to match that color and give you a real good finish. This option would be preferable to all. Of course, then you have to wait on them though...
I am sure others have their pet ways of doing it as well. You might get in touch with Ken in Bozeman and chat with him. He is really good. The number there is 586-2378. Just ask for him and tell him what you are doing. He is the one mixing all their paint.
Hope that little dissertation helps!