I would like to do a Rainbow on my next project... and I don't want to pipe it as I don't want to stand it out much (like faraway). And I don't have an airbrush, but I could buy the Wilton spray. Now here comes the dumb question 
How do I spray the lines and not to over-spray them over with next color - do I have to somehow cover the line I sprayed before to make another?
OR do I have another option like paint them with brush and color diluted with Vodka - BUT my icing will be SMBC ????
Sorry, but I never use spray and I never painted on cream. I think the SMBC or IMBC in the fridge would harden enough to use a brush...and it would be cheaper that buying the sprays. Any comments?
Have you seen this thread?
http://cakecentral.com/cake-decorating-ftopict-664399-rainbow.html
To avoid over spray I'd use a piece of paper cut in the half circle shape, maybe even cut the rainbow strip out to make a template.
TexasSugar
thank you, good idea with the template. I have read the previous thread, where you mentioned you have painted on BC, do you think it would work on cold cake iced with SMBC? Maybe using gel colors, instead of buying 5 cans of spray just for the Rainbow?
I have no experience with SMBC so I really have no idea. Maybe those that use it can help you with that one.
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