The question Can lightsabers be ochre? has a very comprehensive answer covering all possible lightsaber colours in both canon and Legends. For this reason, other lightsaber-colour questions such as Can lightsabers be periwinkle? and Has there ever been a black lightsaber? have been closed as duplicates of it, even though the questions themselves are all quite different from each other.
This has led to understandable confusion from some users:
Periwinkle is a different color than Ochre, incidentally. Periwinkle= sRGBB-204, 204, 255. Ochre= sRGBB-204, 119, 34. For anyone with enough time on their hands to identify (non) duplicate questions on a science fiction and fantasy website, I'd think that research would have been done.
Nominating for re-opening because the linked question is not the same, although the accepted answer on it does answer this.
I can see why it makes sense to have the other questions closed as duplicates of one with a complete list, but it also looks weird to have "Can lightsabers be periwinkle?" marked as a duplicate of "Can lightsabers be ochre?" I propose the following solution.
Should we edit the dupe-target to ask "What colour can lightsabers be?"?
Pros: we get a nice 'canonical' lightsaber-colour question to match the canonical lightsaber-colour answer; and the duplication would become more clearly correct.
Cons: we'd be changing the question without permission from the OP (who hasn't been seen on the site for 3 years) - although of course their original question would still be there and be answered.