Since blue and red make purple I don't see how you can turn it into only blue now. Maybe if you add tons of blue to it then it may be a dark blue with red undertones. However, I think I would be happy it's a nice purple color and go with that. Or freeze it and use it later then start over with a new batch for the blue.
You should be able to turn it blue by using a GREEN BASED blue. The red and green undertones cancel out, leaving the blue. However, adding blue with red undertones will leave it purple. Think teal not navy, try it on a small amount, and let us know how it goes.
Green: Made from Blue and Yellow
Purple: Made from Blue and Red
3 Primary Colors: Blue, Red, Yellow
Mixing your 3 primary colors will give you brown. If they are PURE primary colors, you would get black, but they have to be pretty pure.
I'm afraid if you add green to purple you will get a combo that is 2 parts blue, 1 part yellow and 1 part red. It will most likely end up brown with a hint of blue on the side.
I dont' think you can revert a mixed color back to a primary color.
Acutally to get navy you mix sky blue and violet according to the mixing chart.
http://www.cakecentral.com/article2-How-To-Color-Your-Icing
I have found that once it sets up, it changes from purple to blue. You could test that theory by letting a small sample dry.
Oh, and I prefer to use the navy blue with violet, it seems to give a richer color. Sometimes for quantity sake I will use all three, sky blue, violoet, and navy blue.
I have found that once it sets up, it changes from purple to blue. You could test that theory by letting a small sample dry.
True. When I was first starting out, a cake decorator told me it's because Red Dye #2 was taken off of the market and the replacement was terrible because it faded. She said all the decorators were really ticked off when the dye was removed from the market because their reds weren't as red anymore. She told me if I wanted my purples to stay purple, then I should keep it out of the harsh light (i.e. be sure it's covered during transport or the sun would fade the red out.)
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