Actually Ron, I did know that....Mint Green Paint was the preferred color for Mental institutions in the 50's.
It's supposed to have a calming effect on people....I see that was lost on you!
So you checked to see if the carpet matched the drapes?I had a purple latex spill like that once. Paint can fell off the ladder. Luckily the guy called me right away. I told him to keep it wet and showed up about 2 hours later. Took some doing but it eventually flushed out. He paid me well. The paint job was to surprise his wife. She would have been even more surprised if the carpets matched.