The main XOOT arm has simple black side panels. The stock panels are nice… but their plain.
The panels can be replaced with your own designs. Here’s an example:

3D printing and similar tools make it easy to personalize your XOOT system. (The panel below was made with a CNC Router. )

I’m including a (millimeter scale) SVG file with multiple layers. This template makes it easy to experiment with your own designs.

If your planning on making a cover for the whole side of the arm. Ensure to make room for the bearings (Normally, under the round caps).

-Chris