Thanks for letting me know, I was already planning to start using a variety of colored poo monkeys in my future posts but now I'm going to take care of myself, I don't want the moderator to get mad at meIn general rules section, On-Topic Threads, rule no.2 it is mentioned only that "Avoid excessive use of BBCode, all caps, multicolored or oversized fonts, etc"
But no reason why so we can only speculate things. They may want to avoid coloring/styling of every single post as it can become annoying to read I think.