Just to understand, it’s just color, not anything printed, right? In my precinct we’re not allowed “electioneering” within 100 feet of the polling place (one election I even saw some people pace this distance off) and someone wearing signage (button, hat, clothing) in support of a particular candidate within that cordon would be challenged (though the Dems were always testing the boundaries of this).
I don’t even know if color is okay, but I don’t know what they could do about it.
People have a right to wear red and blue.
I think folks should mix it up a bit. If everyone is wearing the same type of shirt to a precinct I suppose it could get old.
I’m not sure I’d want the Democrats wearing a solid blue shirt that looked coordinated.