k3d/share/shaders/k3d_skin1.sl:26: * Oily,oilmap = controls how oily the skin looks. Use a grayscale map to contol
k3d/share/shaders/k3d_skin1.sl:135:   color for an oily surface sheen.
k3d/share/shaders/k3d_skin1.sl:184:  float oily = 1.5;
k3d/share/shaders/k3d_skin1.sl:206:  float oilVal = oily;
k3d/share/shaders/k3d_skin1.sl:273:  * outside the skin. Oilyness is controlled by the oily, xrougness and yroughness.
k3d/share/shaders/k3d_skin1.sl:276:  if (oily > 0.01){
k3d/share/shaders/k3d_skin2.sl:56:   color for an oily surface sheen, the ratio of the indices of 
