Mode:All Paint Modes
Header:Tool Settings ‣ Display
Panel:Sidebar ‣ Tool ‣ Display

Brush appearance options.

Allows you to customize the display in the viewport of the Curve and Texture that is applied to the brush.

You can change the amount of transparency used when showing the texture using the slider.
Stroke Overlay
The brush icon allows you to turn off the viewport overlay during strokes.
The eye icon is used as a toggle to show or hide the given brush texture.

Show Brush

Shows the brush shape in the viewport.

Set the color of the brush ring. Depending on the current mode there will be options to set a single Color or a Color for Adding/Subtracting.

Custom Icon

Allows definition of a custom brush icon.