Honestly, here something easy to do that will only cost you 3 dollars and a little time. Grab a couple of cans of camoflauge spray paint and give all the bucks a spray on the outside. It doesn't have to be pretty, just mix up the colors. Make sure to cover the buckets before you paint, gotta keep the inside of them clean.

Also, then dig holes and bury the buckets 3/4's of the way, so that ground water doesn't get into the pot, but most of them are covered up. The 1/4 that is uncovered is camoflauged to match the ground better.

The paranoid man is the last one standing. Better to be safe than sorry. Good luck!