[Suggestion] <b16> Spelling error highlighting

The squiggly underlines used to highlight mistakes is now much more subdued compared to previous versions (I believe).

I like the idea, but the current incarnation is slightly too subtle for my old eyes.

Any chance of a way to adjust the strength of this ourselves?
(Yes, I know I can set the colour used.)

This was one of the first things I noticed in the latest beta, and I love it (I always found the old squiggles too intrusive). So, by all means, lets have an option or two, but please can we keep the subtle option?