Making Smolpxl work on phones and tablets

I've added the first features intended to make Smolpxl games work well on touch interfaces like phones and tablets:

I've added a button bar at the bottom (and moved the navigation buttons to the top).

I'm looking for feedback on this:

• Does it work on your device?
• Are the buttons the right size?
• Do they look ok? If not, how could they look better?
• For games that require arrow keys, do you need them in the normal arrow-keys layout, or is a simple row fine?

If you're writing a game and you want to add buttons like this, you just need to add a single line like this:

game.showControls(["MENU", "SELECT", "BUTTON1", "BUTTON2"]);

or this:

game.showControls(["MENU", "SELECT", "LEFT", "DOWN", "UP", "RIGHT"]);

and they should appear.