I thought yellow was things you learn from. I thought green was federal _____ which made no sense with the purple I chose for it, and as soon as I submitted it, I immediately got purple.
I was close enough with blue to get it, though my theory had me very suspicious about one of its entries. If I had been right, it'd be aa 4/5 for reasonableness, but given I was wrong, 5/5.
Spoilers
I thought blue was "types of lights on a car". Parking lights, brake lights, and...turn signals? I'd colloquially call them blinkers. But whatever you call them, "turn" and "signal" are, in that context, referring to the same thing, which would make a very poor connection.
So I similarly got messed up but I thought green was things you would find in a town and included Park instead of reserve and was annoyed that something like βthings you do with a carβ was blue so I let myself think reserve fit there. A couple minutes after the damn words bounced it made sense and I was happier with the result than I would have been if I was right initially.