This page (accessed with the Settings button on the main page) allows you to configure global settings which affect the whole app.
Encoder Mode

This option changes the way that encoders move.
Drag for relative movement. The wheel has velocity in this mode, which makes it easy to cover large changes in value.
Click and hold. Moves at a constant speed which changes depending on how far away from the center you hold.
Color Palette Mode

This option changes what style of color palette is used.

A circular hue/saturation palette. Hue is the angle around the center, saturation is distance from the center.

A rectangular hue/saturation palette. Hue is position left/right, saturation is position up/down.