Trinket internal CD tracking with macro w/o an addon?

Hello, yesterday I saw some streamer (Qwneer), streaming 3.3.5 PvP and I saw that he made macros of some kind that showed the internal CDs on his STS and DBW. I think that he had the STS and DBW images on his Commanding and Battle Shout abilities. I think that's really cool being able to keep track of things this way w/o an addon especially (if it's actually a macro and not an addon). It's like a cool OG thing. Anyone could help me figure this out?

Thanks and happy holidays!

Could actually be Need To Know-addon