Setting the class to md-primary in md-radio-group does not influence the md-radio-buttons

[pmdusso]

I'm not sure if this is a bug or if it's the expected behavior. When we have a md-radio-group, setting its class to md-primary (for example) does not change the color of the radio buttons. In order to do so, we have to add md-primary for each md-radio-button inside the group.

Here is a plunker for it: http://plnkr.co/edit/XNFnAxpD8V0foKhqEsNv?p=preview

This is suppose to work like that?

[marcysutton]

For that control, it definitely makes sense to allow md-primary on the radio group.

[pmdusso]

Thanks :) 👍