I was wrong. After getting a positive feedback, the score remains 0. It changes after each month.
It starts changing after approximately 2 weeks, theymos uses "round_up" for months.
AFAIK, the score turns into green after the score reaches at 5.
Correct. At 5, the trust score is light green. When it reaches 15, it turns dark green.
Examples:
BitcoinNewsMagazine (
14 at the moment) and
Crypto-Universe (
15 at the moment).