On another panel with a dry scratch coat,a thicker tinted lime plaster was applied.The pigments experimented with were a mixture this time,of cobalt blue,viridian green and mars black liquid tube watercolors.It created a greyed down turquoise green.While grinding dry pigments with a muller,and making several combinations of colors,and test panels,I wondered if a more intense color would be possible with a liquid pigment.Since watercolor paints are basically the same as fresco paint,with the addition of a gum binder,in theory it should work.I expected the lime would be caustic to the gum binder in watercolor but if the paint was based in earth pigment,it would be essentially the same as if I had ground the dry pigment myself.Since a range of dry pigments are more difficult to find in art supplies than watercolors,and are more expensive,I wanted to try experimenting with this,and various combinations of watercolor and dry pigment.