k3d/share/shaders/k3d_grids.sl:17:color G1L1_SurfaceColor=color(1,1,1); 
k3d/share/shaders/k3d_grids.sl:66:color G1L1_Ct = blend(G1L1_SurfaceColor, G1L1_GridColor, G1L1_layer_opac);
