I have Ubuntu installed on a Nexus 7.

With a small screen, the "window decorations" (e.g. maximise, close etc.) are almost impossible to touch. I bough a stylus but it's not much better. Precise touching is impossible on a capacitive touchscreen. No such problems if I plug a mouse in to the single USB port.

Is it possible to make the window decorations larger and more touch-friendly? I'm running Ubuntu 13.04 with the Unity desktop.