I've made a few updates to the notes for Knights of the Old Republic #11 — including my rescinding of the Moomo Brothers Identification Rule of Thumb (also known as the MBIROT). It appears (and you can see this from the preview online at Dark Horse) that Dob and Del change scarves between issues #11 and #12. Dob's in the blue and Del's in the red. I checked very closely to see that it was consistent within the issue, but forgot we had gone the other way in #11.
Once, I might have been tempted to make this a running gag — alternating them between each issue — but I have probably presented the indexers of the comics world with quandaries enough in the course of this series. ("Perero," anyone?) I don't know whether this is something we'd look at again for the trade or not.
Believe it or not, you do begin to see differences between the Moomos' personalities in #12, so they're not fully interchangeable!