I dumpster dived and then learned the bar recycled.
My DIL has access at the restaurant.
Blue not hard to find.... But RED is.
Also, there may be an outdoor opaque or transparent glass paint. For just a few bottle should not be prohibitive. I will tell you that the prettiest tree I had was ALL BROWN.. All sizes of brown. Looks great in front walkway..and neighbors like it ..tasteful. I lost that one after few years ...it was created on a dead dogwood. I use dead trees...eventually they rot and keel over (after years tho )