feat(colors, highlights): improved NonText readability

[AlejandroSuero]

@scottmckendry a little tweak on the colours and the highlights to improve readability when using NonText and NonText+CursorLine. Usually used by AI plugins and terminal based plugins to show "ghost text".

Warning

Toggling light and dark 💥

• Before:

Screen.Recording.2024-06-15.at.00.26.19.mov

Using :term:

Screen.Recording.2024-06-15.at.00.11.38.mov

• After:

Screen.Recording.2024-06-15.at.00.25.24.mov

Using :term:

[AlejandroSuero]

I force pushed cause I don't know how (87aee45) got in the PR while I was writing it 🤔

[scottmckendry]

Wow @AlejandroSuero ! Appreciate all the work you're putting in on these PRs!

I think this is a very necessary change and should be fixed. However, I think we should try and make it work without affecting the base palette. As you can probably already tell, this has the knock-on effect of updating all of the extras that reference it.

You can use the util.blend function to produce new colors from the ones already available if there is nothing suitable in the palette itself.

[AlejandroSuero]

@scottmckendry okay, I will play around to get a feel to mix the base palette.

[scottmckendry]

It's still showing lots of changes to extras, I think there still may be changes in colors.lua that differ from main. Can you check, please? Thanks!

[AlejandroSuero]

@scottmckendry This has nothing to do with this PR but while I was playing around with the values, I used Telescope a lot and notice that there is no contrast between search and results and preview.

Here is my proposal.

• Without changing anything but TelescopePrompt{Border,Normal,Prefix}):

• Changing the colours:

[AlejandroSuero]

It's still showing lots of changes to extras, I think there still may be changes in colors.lua that differ from main. Can you check, please? Thanks!

Okay I am going to copy the main branch colors.

[AlejandroSuero]

@scottmckendry now it only changes 1 files, I check the colour contrast and still works correctly both in light and dark

[scottmckendry]

@scottmckendry This has nothing to do with this PR but while I was playing around with the values, I used Telescope a lot and notice that there is no contrast between search and results and preview.

Here is my proposal.

• Without changing anything but TelescopePrompt{Border,Normal,Prefix}):

* Changing the colours:

@AlejandroSuero the blue looks quite nice. Do you have this change in a branch? Would like to see how it looks in person :)