Ignace Dhont wrote:

I understand burlap is the
acoustic best fabric to dress it up with.

Years ago at onion audio in Austin TX we used coarse linen over cotton
batting in one area, and Lanis dyed it in place using a Windex spray
bottle and RIT blue dye. She wound up doing a kind of fade that turned
out looking a lot like sky. Was pretty groovy looking and worked nicely.
Cheap, too.

--
ha