Was waiting for someone to comment this. It's a somewhat known strategy if you have to read through a bunch of boring code you don't want to work with, and find hard to focus with, to turn off the syntax highlight and somehow the brain stops glossing over/skimming the code and starts to pay more attention.

I found it led to marginal difference at best, as with most strategies. It does work well initially though, as I guess the brain stops being able to use colors it's used to for grouping stuff together and similar.