I spent a week searching in the one and only system in the Hind Nebula. About 4 hours per planet. I did not find any barnacles.
The one and only system in the Hind Nebula is T Tauri. It has three rocky planets orbiting two Class III gas giants. The two rocky planets orbiting the closer of the two gas giants don't have those nifty colored patches, while the one further out has some very slight coloration. This isn't a requirement, btw! (See e.g. several of the California barnacles). Physical properties of the planets seem to be smack in the middle of the barnacle zone, except for metal content, which is on the low side.
I spent about an hour on each without finding anything. Not that I would expect to after just an hour.