Set contact color to controls in suggested aggregations card

This CL sets the contact color to the buttons and checkboxes per UX.

Here's the mocks:

https://drive.google.com/a/google.com/file/d/0B8zhH1VR_EZrM28yLUFHTFZuNkk/view?usp=sharing

Here's a screenshot:

https://drive.google.com/a/google.com/file/d/0BwSNbQ_IWQd2bEhZekQ3a3hXVU0/view?usp=sharing

Bug: 25165935
Change-Id: I8ab9bf316aef42555b09e2149ef694e9ed5e3c82