[bkury]

The home menu management is awesome. We can manage all librairies, and the widgets that goes with them. Great Job!

Thank you!
 

I haven't succeeded in adding a Plex playlist on the home menu. I have been able to add the Playlist menu but not a specific one. Any idea how to do that?

I think you are looking for the "custom home" feature :
 

• Select your playlist (e.g. Library --> Playlists or directly from a widget), Open context menu --> Add to custom home --> Add to Custom #1 / Home Menu
  

• Select your playlist again, Open context menu --> Add to custom home --> Set Custom #1 Widget #1 to "dynamic" --> Select Item #1 to save your playlist
  

You should now have a new home menu item and a widget which shows the content of your playlist.
 

Settings - Background - If I modify the Default background to an image, it is not loading on the home screen (this is happening both on the Vero 4K and my Mac mini). (But if for each Plex librairies I manually set up the background, it works)

The default background option is actually the fallback background, it only shows up if there is no fanart or other background image available. (I should rename it to fallback image)
Anyway, you can only change the home background via "Settings --> Home Menu" like you already did for you plex library.

Hint:
You can bulk change most home menu options via "Settings --> Home Menu --> Section (e.g. General)", so if you want to have a custom image for all "General" home items you can do something like this :

• Settings --> Home menu --> General --> Background --> Custom image
  

This will set a custom background image for all home menu items in the "general" section.
 

Setting - Colours : I can't seem to change any colors, when displaying the library of colors, they are all white and selecting one, doesn't change the color, it remains the default cyan one

Confirmed. Thanks for reporting!
 

Inside a library, the gray frame (and the overlay one) around a poster is a little bigger in width than the poster itself

I see, please give me some more information:
 

• Your Resolution (I assume 4k) and Aspect ratio (16:9?)
  
• Is your viewtype image size set to something different? (Options --> Appearance --> Small/Medium/Large/Huge)
  
• Does it only affect poster images or do you also have this issue with thumbs? (e.g. panel episode view)
  
• Are widget poster images fine? So, this only happens when browsing the library?
  
• If it's possible, a screenshot would be very helpful (via PM if you want)