Container picker allows colour customisation via skin.yaml file

[placintaalexandru]

Is your feature request related to a problem? Please describe.
At the moment, the container picker colour is hardcoded ad it can be seen from the code

Describe the solution you'd like
I would like a new filed Style.Views.Picker, from internal/config/styles, that allows configuration of colours when displaying container names and when the cursor is over a container name.

The new Style.Views.Picker would have 3 fields:

• mainColor: the colour of the container name text
• focusColor: the cursor's colour
• shortcutColor: the left shortcut's colour

Bellow you can see an example where the skin.yaml file was set to:

picker:
      mainColor: *foreground
      focusColor: *pink
      shortcutColor: *red

When the cursor does not select the container:

When the cursor selects the container:

Describe alternatives you've considered
I don't think there is an alternative way since the purpose of this request is to remove the hardcoded colours from the picker view and allow customisation via skin.yaml file.

Additional context
None