I'm getting ready to do some painting after 40 years. Aside from discovering Floquil is gone I am trying to improve on the way I painted things long ago. I'm planning to finish off locos and cars with appropriate clear gloss / satin / flat finishes. While looking at decals I see there is Microscale Micro-Gloss. Under the name it says it is "Decal surface prep". I can't figure out if this is product is an acrylic top coat and essentially acrylic paint or something else. The instructions say it goes on before the decals ??? Any help would be appreciated.