Title tab color should dim on unfocused tab

[AdrianoCahete]

Description of the new feature

Today, when you have a unfocused tab, the background changes, but not the color of the title. If the focused and unfocused colors are almost the same, you have problems to see which one is focused.

(first is focused)

Theme info:

"name": "Dark+",
            "tab": 
            {
                "background": "terminalBackground",
                "iconStyle": "default",
                "showCloseButton": "never",
                "unfocusedBackground": "#00000000"
            },
            "tabRow": 
            {
                "background": "#333333FF",
                "unfocusedBackground": "#D4D4D4FF"
            },
"window": 
            {
                "applicationTheme": "dark",
                "experimental.rainbowFrame": false,
                "frame": null,
                "unfocusedFrame": null,
                "useMica": false
            }

Explorer @ Win 11 does this:

Proposed technical implementation details

Let the title text to be customized, like the unfocusedBackground, but for text title (unfocusedTabTitle, maybe?). Or, at least dim the title text too.

[Jorawarcs]

@AdrianoCahete

Hi, this issue looks interesting. Could you please assign it to me so I can work on it?

[DHowett]

@Jorawarcs actions speak louder than words. We will not assign you to this bug - if you want to work on it, do it.

[Jorawarcs]

@Jorawarcs actions speak louder than words. We will not assign you to this bug - if you want to work on it, do it.

Got it, thanks for clarifying. I’ll start exploring the codebase and see if I can come up with a fix.