Improve regex highlighting in Python

Describe what you want

The regex highlighting in Python in Dark+ is fancier than in One Dark Pro.

Additional context

As you can see in the screenshots, Dark+ uses 3 colors for regex highlighting, while One Dark Pro only uses 2.

Code from screenshots for reproducing:

import re
tag_pattern = re.compile(r"\[(id\d+?)\|.+?\]")

[tomaciazek]

Now there’s good old fountain-blue on escape characters 😃 Thanks!

[Binaryify]

plz check 3.13.19~