http://www.westsystem.com/ewmag/21/p...1_pigments.pdf
above is pdf from west systems (copy and paste in browser) it describes coloring their epoxy.
we have been using resin pours in our king color core and polytone signs for some time because others have been doing it. We have wondered how this might effect our warranty as we ship signs all over the nation. I am not sure i trust the resin pour to hold up long term outside. Some resins we have used are not for exterior use and they shrink and crack. So i am re-investigating the resin issue to see whats new out there that i do not know about. seems like what i do not know can hurt me and more than anything i want to sell honest products. anyone with resin pour inlays who would contribute to this discussion please jump in with your experience and thoughts.
the pdf from west says that the pigments added can effect the adhesion. I like the ease of resin compared to the fiberglas inlays we used to put in. Thanks for any help out there.