If you tint your frosting with a burgundy coloring first then with red you will end up with a true red color.
Feb 15, 2010 Rating
Is It RED YET? by: Anonymous
The strongest frosting colors are paste....not liguid or gels....start with a small amount...it is powerful. Just add until you are red in the face..... Aloha Bob
Feb 12, 2010 Rating
Red Frosting by: Anonymous
Depending on how much icing you are trying to color, it may take a couple of containers of red. I use the Wilton "No Taste Red". And dark primary colors (red, blue, green, even black) will darken over time if you're coloring Buttercream, so I usually color mine the night before I need it. Then you can see if you need to add more coloring to it.