"Anecdotal, but I'm making much less errors and paying more attention to the code, now." Could be correlation rather than causation. Presumably, you're a more

"Anecdotal, but I'm making much less errors and paying more attention to the code, now." Could be correlation rather than causation. Presumably, you're a more experienced programmer now than you were three years ago and you might be making fewer errors and paying more attention regardless of whether you turned off syntax highlighting.