These little bottles I got from a modelshop online in the UK. Look very similar to Vallejo ones though I can't be sure. Anyway they are lacquer proof which is good. As you can see there is a little removable nozzle and screw cap.
I cut the end of the nozzle off so the paint would flow out really nice and hey presto the nozzle fits snuggly into the 360's color cup - just like a fastblast lid. So with a little hole in the top large enough for a pipette I have a nice transparent gravity cup.
