Review (4/5): dont put too much color in
I have used this before with one of the red Splat dyes. Add the color dye a little at a time to the pastel. The pastel doesn't put a big dent in the intense color so you have to go slow. Remember, you can always add MORE! I did save the color dye and used it again two or three months later. I used duct tape to close it off.