Add XAML editor's behaviour "Show inline color previews"

[woodstoke]

Is your feature request related to a problem? Please describe.

There is a VS option: Text Editor -> XAML -> Miscellaneous -> Show inline color previews.
A small colored square appears in the editor, but not in the Avalonia XAML editor.

Describe the solution you'd like

The ability to edit in default XAML editor (by Open With...) or support this feature.
BTW, if you open .axaml file at least once in the Avalonia Editor, then others .xaml files are opened already in it (feature with colors stops working).

Describe alternatives you've considered

No response

Additional context