hey, I've been using Zpoxy to pore fill. I like it, it works great and is pretty easy to use. It naturally has an amber tint to it but doesn't really darken the pores that much. I am refinishing a Flying V that I had built out of mahogany and am using the Zpoxy. I wondered if you could tint the stuff so I tested the theory just now. I tinted using transtint/colortone red dye and so far it seems to work! It really darkened up the pores the way I wanted it to. I had previously filled the back using it natural and then went over on the 2nd coat using the red mixture. It doesn't work as well this way. So if you are going to try it out, use it as the first coat. I'll update later to say if it had any adverse reactions.