Can you hide code that coverage says isn't used?

So at work we have some methods that are 400 lines long. Not many but some.

Currently I know the use cases I'm testing and can see which code isn't used based on red in the gutter.

My question is is there any way I can make that code less visible in the editor?

Can any style be applied to code that is deemed to be not used ie. red in the gutter.