Check this out.
http://www.geofex.com/Article_Folder...t/swirlpnt.htm
50 years ago, Pflueger painted plugs this way. It is suprisingly easy. Float a few drops of Testor paint on a dish of water, dip, and enjoy. This was an old ballerina clone I experimented with. I've still got some kinks to work out (namely the colors need to be thinned to the same bouyancy) but the possibilities look exciting and I thought some of you might want to give it a try.