The Colt is back up and running, more or less.  The official diagnosis was that it needed a new distributor cap and spark plugs (which makes sense, considering the car wasn't running in wet weather, and that they hadn't been replaced for about 4 years).  This should have been a simple fix, until my mechanic called saying, "We tried to change the distributor cap, but a bolt was frozen and we couldn't get it off.  So you need a new distributor."  The conversation I then had with the mechanic was similar to conversations we've had for the past couple years, every time something goes wrong with the car.  'How much is this going to cost?'  'Is this 'fix' worth it?' 'What else could possibly go wrong with my car?'  (To this the mechanic paused, then replied, "Well, there are a lot of parts to a car.")  I decided to get the new distributor and all the parts and labor that went along with it, and once again promised that this would be the last repair.  

That was early last week.  This week, I found that my car has been stalling in the mornings when I try to start it up.  If I let the car run for about five minutes to warm up, it drives just fine.  This isn't so bad; I have an old car, and winter mornings can get pretty cold.  Besides, this is the last winter for the Colt, and it's already nearing the end of February. Plus, at least I can now drive in the rain and snow!  And on another positive note, there was another 91' Dodge Colt at my mechanic's garage when I had my car in last week.  He mentioned the coincidence, then said that he couldn't get the 'other' Colt started, and didn't know what was wrong with it.  This made me feel better: I might have an old, troublesome car, but at least it's running.