They're easy to use and you can adjust some as you go. I've mixed some of them on the fly, a squirt of this, some of that, resulting in some nice colors that probably aren't repeatable as well as some that are better hidden away in a very dark place.
Cherry - Non Bleeding - Same after gel as when poured into mold. I purposely went light on this one and liked the result.
Java Beans - darker after gel. I purposely used very little for this one and it is darker after gel than I wanted.
Citrus Green High pH - Salt bars
Lemon Sherbet - I went a bit heavy on this one.
Teal
Cimarron High pH
Flamingo High pH
J