Comment by 1propionyl

Could I get a little hint or nudge on 23?

I'm currently down the rabbit hole of reading about (ROT13) uggcf://zrqvhz.pbz/@wnzrfeboregf_96602/genafsbezref-hx-gur-pbzvp-gung-arneyl-purngrq-qrngu-9np69r7578q2

I also considered colors...