Playing with Gaffer Royal Purple G198 to see what effects I can get on different coloured base glass. 1) Royal Purple K2 on a base of copper rich glass, this has produced wonderful colour shifting purple with a lovely deep purple/red edge to the frit; these beads have a slight rough feel due to the copper rich glass. 2) Royal Purple K0 (grain) on a base of copper rich glass.  3) Royal Purple K0 (grain) on a base of copper rich glass and pure silver foil.  3) Royal Purple K1 on a base of orange glass and swirls of iris orange; this has produced a gorgeous deep pink/purple effect.