Tonight I painted all the metal parts and the ROV frame. They first were cleaned and then received a primer coating (black matte) followed by a "hammered" metal look :

ROV Paintjob 001

The paint will not only make the ROV look good  🙂 but also protect the aluminum against corrosion.

ROV Paintjob 002

ROV Paintjob 004

ROV Paintjob 006