Is there an easy way to color bc frosting? Example: Wilton's black color it seems to take a lot to make it black. Red is another one that is difficult to get a deep color. I also don't like the way it changes the color of your tongue and teeth. Am I doing something wrong?

For black, you can start out with a chocolate buttercream, I have issues with red. I just stared to buy the wilton red and black in the tube for smaller easier use.

Wiltons has a "no taste" red also