We use ink drop ripples on rows in the Chrome OS system menu --- try clicking one. Should we do something similar for the omnibox?

Note that we have to add a slight delay to the action in the CrOS menu so that the ripple is actually visible. We'd need to do something similar so the omnibox doesn't disappear instantaneously when you click on a row. This could be annoying but in practice it's fast enough it doesn't matter (would still be much faster than the load time of whatever you clicked).