Setting work Item as blocked

Hi,

We are using visual studio 2013.

We do use swimlines for work items.

If a work Item is blocked I set it to "blocked: Yes"

so far so good.

BUT I want a blocked Item to change colour in the board to "red" so it is easy to pick up during our daily standups.

I am gusseing I can set up a Query to find any work Items that are blocked, but it would be better if it was a way make the blocked ones to appear different than others on the board (like in Jira)