Remove zsh color for comments

[gbe]

Description

Whenever I am in the middle of a command line and I find out that I am missing a piece, I like commenting the line, to easily come back to it later.
However, the way zsh currently behaves completely hides the command as it is basically black on black.

The image below shows how "This is a comment" is displayed (hint: it's written on the first line):

This PR makes the same comment appear as follows:

At least we can read something.

This PR is minor and is a customization I have in my-resources, I thought maybe it can be of interest of others.

PR is based on the branch 3.1.1.

[ShutdownRepo]

Nice, could you maybe set the style to something grey and italic, or only grey ?
Also, you should take a look at the push-line ZLE command wich could make your process way easier, it's on Exegol already

[gbe]

Unfortunately, grey is not a supported color apparently. There are only 8 from what I understand: https://github.com/zsh-users/zsh/blob/master/Functions/Misc/colors
And italic was not supported by two different terminals.

When the attribute is none and the background is black (as in my example), the comment appears in white. Should the background be white, the comment turns black automatically. This is nice for crazy people with a white background ;)

However, if we set the color amongst the 8 possible ones, it seems the best ones are (in my opinion and in order of preference) :

• cyan (preferred color):

• blue:

• magenta:

The others colors may be too much connotated as an error (red), a success (green), pown (yellow). Plus, these three catch too much the eye for a text that is only a comment, and by definition not important.

Aaah, taste and colors 😄

[ShutdownRepo]

Alright, let's go with cyan then
The issue with white being that it's the default color, that it's used in regular commands, I'd like to have a different color for comments, since let's go with cyan

[gbe]

@ShutdownRepo Thanks for your return. This is done.

[ShutdownRepo]

@gbe I was able to have grey comments with the following line, I'm editing your PR now

ZSH_HIGHLIGHT_STYLES[comment]='fg=#888888'

Let's have it that way so that the format is similar to what's been set on ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE, the color is pretty neutral while not being too dark.
And if users want to have a custom color, it's possible through my-resources (docs)

[gbe]

Perfect

[ShutdownRepo]

Tests passed, merging now