k3d/share/shaders/k3d_grids.sl:38:float G2L2_fuzz=0.306; 
k3d/share/shaders/k3d_grids.sl:92:color G2L2_layer_opac = pulse(G2L2_linewidth, 1-G2L2_linewidth, G2L2_fuzz, G2L2_tt);
