Well, I made a whoops. Not due to lack of patience, but stupidity... and I was a bit hurried.
Thursday night after work, I planned on kegging a blonde ale I had finished dry-hopping, hopefully in time for kickoff. I grabbed the bucket, got all of my sanitation done, blah blah blah. While I was doing my hydrometer readings I noticed it was a bit dark. Didn't think much of it, as I had modified my usual blonde ale recipe a bit and it turned out a bit darker anyway. Siphoned it into the keg and hooked it up to the gas.
Friday as I was picking moving all of my stuff, I looked at the bucket, and remembered a conversation where my buddies were commenting about the text on the bucket while I was brewing the blonde ale. This bucket didn't have that text. I had grabbed the wrong bucket and kegged a five day old amber ale. I didn't have a chance to do anything as I was leaving town right away, and returned today, which is why I'm asking the question 3 days after my screwup.
My hydro reading was lower than anticipated (expected around 1.012, got 1.007), so if fermentation wasn't complete, it was close enough that I'm not too worried about it. My question is, should I finish carbing, and let it age cold in the kegerator for a few weeks, or take it out after carbing and let it age a bit warmer in the basement... or take it out now before carbing is complete and let any fermentation finish up in the keg and hook it back up in a few weeks?