I went to a local Sherwin Williams Paint store and had them mix a can of Minwax water-based stain. The color is called "Green Tea." Unfortunately they only mix a minimum of one quart so I have enough to stain another 100 drums. The whole can was about $12. Maybe I'll build a Keller/DW 12" clone to match...
Great call on the that recipe. Man, it looks awesome.