k3d/share/shaders/k3d_eyeball.sl:13: *   iriscolor - color of the iris
k3d/share/shaders/k3d_eyeball.sl:48:	 color iriscolor = color (.135289, .084323, .372417);
k3d/share/shaders/k3d_eyeball.sl:107:  Ciris = mix (iriscolor, irisoutercolor, smoothstep (irissize*.8, irissize, tt));
