With the notable exception of the Xi Provisional Galaxy, the Nova Cats tend to paint their ‘Mechs in appropriate camouflage.  After all, the nova cat is a subtle hunter. – per FM:ComStar, pg 113

Other references:


The Omicron Galaxy was changed after their spectacular defeat of the Cloud Cobras’ Delta Galaxy. It shows a giant nova cat astride a mountain peak rising above a cloud layer, highlighted by lightning strikes.

Per FM: ComStar, page 121.