i haven't managed to play DD yet, but while watching playthrough videos it became clear that i simply lack the memory needed to be able to keep track of attribute modifiers from various sources (and i'm a bit surprised that no generic +1/-1 counters are included to track attribute changes). So...
need a -1? use an orange Danger Level 1 counter.
need a +1? use a green Town Level 1 counter.
I'd like to do yellow counters numbered 2-11 to fit over the stats on the characters sheets, but for the base game there are already A LOT of counters in there...