D&M came up with the color coding afaik. Audyssey is currently in three levels of MultEQ; MultEQ, MultEQ XT, MultEQ XT32; there was 2EQ before that. I suppose a fourth level of MultEQ was available with Audyssey Pro compatible units, but the new app this year supplants Audyssey Pro.
I had a Pioneer with Advanced MCACC and then got an Onkyo with MultEQ XT, I preferred the XT results, particularly for subs, a bit more but the Advanced MCACC had some nice features and was no slouch. I have added a Denon with XT32 and that was a noticeable improvement....YMMV.
I'd like to play with Dirac or Trinnov but don't want to spend the $ to play with those at this time....