UI Theme (a different approach)

[braver]

I based this theme on Default, which is easier to work with than Adaptive (because it doesn't try to adapt itself so much). By using that as a basis we can leave some of the details to that theme, and piggy back on new developments. By setting pretty much all the variables that it expects, a lot of it falls into place automatically. I then re-implemented the ui theme:

• I went for slightly rounded tabs, the others didn't look right... They match the rounding of the buttons throughout Sublime Text and I found that that matches the rounding used in Rosé Pine's style.
• I set the tabs slightly floating between the title bar and the editor area.
• tabs don't adapt to the color scheme, they match the chose version of our theme
• use file-type specific icons, in monochrome, borrowed from FileIcons
• remove all transparencies, instead transitioning from (e.g.) highlight-high to subtle
• the intention would be for a user to combine the matching UI theme and editor color scheme, although I guess you could also mix and match

This intends to replace #3. I did take various hints from that PR, but started over.

Note that to try this, the package should be installed (downloaded, cloned) in a directory called "Theme - Rose Pine". This is to load images in the theme correctly. Note the lack of accent on Rose, Sublime (and many other tools actually, although it's mostly fine for filenames) doesn't like paths with such characters in them.

Anyway, let me know what you think.

Rosé Pine

Rosé Pine Moon

Rosé Pine Dawn

A screenshot using Moon, showing more UI features

[braver]

I don't think that's a blocker, though, and we can merge this and iterate if that's any easier

There is definitely going to be some more iteration as the themes mature and we maybe get some feedback from users. I've been tweaking little things all the time while using the theme myself. I'll move forward with the merge and publishing first, and we can handle anything that comes up later.

[crhallberg]

Thank you, @braver ! Nice to finally clear this out of my backlog!