[Bug 84872] doesn't provide inconsistent state of radio buttons

[Sebastian Heinlein]

Public bug reported:

Binary package hint: ubuntu-artwork

There is no visual difference between activated and inconsistent
radiobuttons.

Take a look at the attached screenshots or the attached code example.

** Affects: ubuntu-artwork (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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doesn't provide inconsistent state of radio buttons
https://launchpad.net/bugs/84872