Angela, how much of it do you use? Because I used it recently to color icing and all I got was a deep pink.
Even when I get the gumpaste red it still will dry much lighter, I always just bring my gumpaste to a pink and then airbrush my roses, works great. Adding cocoa powder to your gumpaste to get a deeper red.
If you are making your gumpaste from scratch, replace some of the 10x sugar with cocoa powder and add coloring with liquid ingredients. I do it with my fondant recipe and figure it will work the same for gp.
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