Just tried it on VSCode. The Penumbra light doesn't map very well in a few places. If you open the "Editor Playground" page, some of the code samples have some pretty unreadable sections, because the background grey is too close to the foreground colours.

Nice idea, but I'm afraid that for coding I'm going to be sticking with Solarized light for the moment.

Feel free to make either an issue or even a pull request, I’m very much looking for feedback on the implementation!

Do you have the same issues with the Dark Contrast++ version?

FWIW comments are quite an important part of reading code, it should not be hidden, at least when comments are used for documentation purposes. It shouldn't be as prominent as the main code, but should be pretty close to it. Very few color themes get this right.

I’m not sure if I’m already using the closest colour in terms of luminance or not, I’d have to check.

If not, I’m very open to pull requests on the theme, including fundamental reworks. Otherwise there might be an argument whether one would want to make the closest de-emphasised colour less so, but that would require more fundamental changes to the palette (which I’m also open to for the background colours!). I think for this part I looked at what others were doing so I might have gotten it wrong from them.

That makes sense; I thought it kinda looks like comment. Pretty pleasant colors, otherwise. Good work!

Thank you, I’m glad you enjoy them!