Cirius Resin Dyes may be used to color opaque resins, too. In that case you must use an additional quantity of colorant to overcome the lighter inherent color of the opaque resin.
Casting Materials, Resin, Latex, Silicone, Mounting Casting
AMERICAN CRAFTS Color Pour DYE 30Z OPAQ, Opaque - Mixed Berry
Colorants
Urethane Casting Resin
PolyColor dyes are oil-based for coloring liquid urethane rubbers and plastics. Up to 0.5% dye can be added to the total mixed weight of the plastic
PolyColor Polyurethane Dyes
❤【COMPLETE RESIN STARTER KIT】: Our resin kit provides the materials and tools needed to get started with DIY and art ideas, adds the number of tools.
Nicpro Epoxy Resin, 1.5 Gallon Crystal Clear Epoxy Resin Kit, Coating and Casting Resin Supplies, Resin Epoxy for Art Craft, Jewelry Making with 24
Mediums & Tools Techno Glow Products
SO-Strong™ Urethane Pigment - The Compleat Sculptor
CU Dyes Polyurethane Dyes
URETHANE PIGMENTS - Pigments / Dyes
1 Gallon Epoxy Resin Kit with Pumps, Resin Dye, and Mica Powder – Let's Resin
LET'S Resin 18 Colors Epoxy Pigment, Opaque Liquid Resin Colorant Each 0.35oz,Odorless Epoxy Resin Dye Solid Color Liquid Dye for Resin Jewelry DIY Crafts Art Making
Urethane Resin Dye 1-Oz., 5-Oz & 16-Oz.,Polyurethane Dyes - ArtMolds
hildie & Jo 0.3oz White & Black Transparent Resin Pigments 3ct - Resin Dye - Art Supplies & Painting
ComposiMold: Colorants