Which scripts the big channels use is completely irrelevant. Fact is most those colorful stuffs are being generated by scripts which spam the crap out of others, or are unsafe to use. You should never use scripts you don't trust (And yes, I know many people still use em, but that's beside the point). In general, the more annoying the script's colors are, the smaller the chance the script is safe and doesn't spam. The scripts out there that were made with channel protection etc in mind, like PnP and MISHscript, do not use excessive colors.