I have put colron wood dye on a new pine bathroom door. As it is close to the shower I need to seal it and have bought some Ronseal exterior satin varnish which I was hoping would be OK. But I've noticed that the dye is waterbased and the exterior varnish is oil based. I'm basing this opinion on the fact that the dye washed out of the sponge I used with water and the instructions on the varnish tin say to wash brushes in white spirit. Will the exterior varnish be OK on top of the dye?