User blog comment:LadyAzur/The Good, the Bad and the Ugly - Habits!/@comment-25085701-20170212235248/@comment-25085701-20170213154503

To clarify:  A + or - Habit alone degrades by half its value at cron, such that if you don't practice a good or bad Habit for a few days, it returns to yellow (zero) state. One click every day is more or less canceled out each day, so unless you have a really bad /good Habit (multiple times per day)  you won't see the Habit color changing very quickly.

+/- Habits, however, retain their value across cron - so the light blue Habit I have is still light blue even though I haven't clicked +/- in a few weeks.