Here's a WIP of the menu in my upcoming bus app to toggle specific routes on/off. To go back to the map, the user can either drag the map back or hit the back button. The arrows in the menu are smart enough to draw themselves with just a main hex color pulled from a web server.
high res video here
real pixels (Map) over here
and real pixels (Menu) here
keyboard shortcuts: ← previous shot → next shot L or F like Z toggle zoom