Less But With Color

less -R --use-color unlocks a color scheme most people never touch. Man pages get formatted, then stripped, before they ever reach the pager.

Keep the formatting, then let less color it:

MAN_KEEP_FORMATTING=1 man tree | less -R --use-color -Dd+r -Du+b

Full palette control if you want it, monokai-ish:

less -R --use-color -Dd+197 -Du+81 -DS208

Pitfall: $MAN_KEEP_FORMATTING = 0 is still truthy. Bash checks for empty, not zero.