Dark ring was horrible too, never really thought about ring colors before but the classic blue really is the best.
They use a red on in some Latin American countries, or a half red half white one which I like. Seen yellow, I know that in Japan they have some white ones and even a peculiar off white or grey one
Personally I hate watching Culcay. And tbh, I'm not too fond of Boo Boo either. I hate this fight actually.