These soaps are colored with Bramble Berry LabColors. I purchased the 10 ml size and diluted with 8 oz of water (w/ preservative). The recipe for these test bars is:

Coconut oil – 10 oz
Palm oil – 10 oz
Olive oil (Bertolli Regular) – 10 oz
Castor oil – 2 oz

These soaps were gelled.

Color Mixed Mold / Wet Unmolded
Uncolored
2 ml diluted Royal Purple
per 3 oz soap
2 ml diluted Canary
per 3 oz soap
2 ml diluted Fuchsia
per 3 oz soap
2 ml diluted Magenta
per 3 oz soap
2 ml diluted Blue Mix
per 3 oz soap
1 ml diluted Blue Mix | 1 ml diluted Canary
per 3 oz soap
1 ml diluted Fuchsia | 1 ml diluted Canary
per 3 oz soap
.5 ml diluted Blue Mix | 1.5 ml diluted Canary
per 3 oz soap
1 ml diluted Fuchsia | .5 ml diluted Blue Mix
per 3 oz soap
2 ml diluted Fuchsia | .5 ml diluted Blue Mix
per 3 oz soap
1 ml diluted Blue Mix | 2 ml diluted Canary
per 3 oz soap
*Results will vary based on oils used, fragrance oil, whether you gel or not.  These colors look pretty accurate on my computer screen but realize they will look different on different screens.