A while back there was something like this, RCing everytime you see a color, e.g. green, Made me do up to 500 RCs… in 5 minutes…
It was named something like MILD but with an extra letter added somewhere inbetween, I’ll look it up 
edit:
https://community.ld4all.com/t/the-color-rc-technique/15016
But that wasn;t the one…
Ah, MELD it was…: https://community.ld4all.com/t/new-technique/14283