Theme: port of Zed's OneDark and OneLight themes

[EricHenry]

I am a big fan of Zed's OneDark theme variation so I ported it over to helix. Here are some screen shot comparisons.

Zed

Helix:

edit: updated screenshots

[archseer]

How different is it from the regular one?

[EricHenry]

The color pallet and the colors used for tree sitter scopes are different. I think the only colors that are the same is the background and color used for comments.

Here are some screenshots of the current OneDark theme for reference.

OneDark of same code as above:

---

New code screen shots

One Dark:

Zed One Dark in Helix:

edit: updated screenshots

[EricHenry]

I've updated the PR to also include Zed's OneLight theme. Here is a comparison of the current onelight theme, the Zed alternative, and the Helix port in this PR.

Current OneLight

Zed OneLight

Helix OneLight

[the-mikedavis]

It looks like light and dark are virtually the same except for the colors. Could they be refactored into one theme where the other inherits it (https://docs.helix-editor.com/master/themes.html#inheritance) and changes the palette? For example see the gruvbox themes

[EricHenry]

@the-mikedavis great idea! I'll refactor it, there is quite a bit of of overlap between the two.

[EricHenry]

thanks for the suggestion @the-mikedavis , this cleaned up the light theme a lot.

[gavlig]

I'm sorry for writing in a closed PR, but @EricHenry I need to know what is that beautiful font you're using (probably in all screenshots, but I like how it looks the most in the first post)

[EricHenry]

@gavlig hey I totally get it. Haha I like beautiful fonts myself.

There are 2 fonts in the first post. The one marked Zed is from the zed editor. They built their own font (that I’m a big fan of too) called Zed Mono and Zed Sans. You can find them here: https://github.com/zed-industries/zed-fonts

The other screenshot marked helix is my other favorite font and daily driver. Cascading Code. Also free: https://github.com/microsoft/cascadia-code

[gavlig]

Thank you, much appreciated!