@ Stevenyang0430: The color is plugged into the transmission color. No need for a diffuse color. Its just a specular material with a scatter medium and large scatter scale value. At larger scale sizes the transmission behaves like diffuse, except that it actually scatters light, allowing for the backscatter effect.
@ yhloon: Log into your account on the main website (the link at the top); Press the "Live DB Maintenance" button; And press the delete button for the shader you want to remove.
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