I recently finished another gilded door for a B & B in Berry. I applied copper leaf over a red bole finish and then used cupric nitrate in an eye dropper to get a rain streaked window effect on the door.

It was really interesting to see how the chemical burnt into the bole (nothing unusual about that) which then exposed a lot of the red underneath. The end result looked like bloody rain or red streaked tears, with touches of oxidized green as a result of the chemical's reaction to the leaf.

The client loved it. She said it reminded her of what it was like living in London as a child and watching the rain streak
down a window pane during a storm.