Customizable font?

[e-t-l]

Is your feature request related to a problem? Please describe.

The Holo theme has a thicker typeface than the other themes and I dislike it.

Describe the solution you'd like

A selection of fonts. I was originally thinking users could install custom fonts from OTF and TTF files, but after cursory research I think fonts have to be hardcoded assets.

Use case

Improves UX. Can also be considered an accessibility feature.

Describe alternatives you've considered

being sad with the holo theme

Additional context