Oops,I thought the trust score will be based on the depth level of the members,so anyone knows how long time needed for a feedback to turns into green and what is the purpose of green into black after some time?
Here you go-
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).