List view - decide how to stylistically handle time-select buttons

[flbarfield]

Dropping in this comment as a reminder -

"Right now when I select a duration, I get no feedback on the UI on what option I have selected. Ideally once an item is selected, we darken or shade the button, or change the copy of the button. We can discuss this when we talk about styling later, but just wanted to flag as something to be considered when updating the UI with a new type of input."

[aberger3647]

Force the user to make a selection (remove default)
Add validation