I was trying to get the Messenger chat color gradients to work on Opera, but sadly no luck so far.
To clarify, it's about these chat color options:
Even when the color gradient option is selected, the chat color will remain 'solid.' I do believe the color is being picked up from the option you have selected, but the gradient effect will not follow. Thus resulting in the chat to be colored in a solid/static manner.
I have tested this (and encountered the 'issue') in:
- Messenger pop-up tab while using Facebook
- Dedicated Messenger / Facebook messages page (facebook.com/messages/t/xxxx)
- Facebook Messenger 'app' from the Opera Sidebar
Example from different browser (this case: Mozilla Firefox):
I am using Opera for Windows (version 62.0.3331.99)