What am I missing here?

[Lochnar]

I got a chaos blue pigment from the dojo, but when I try to use it on any greater tot arties it wont let me saying "this tub can only be used to dye artifacts and enhanced magic items". Greater ToTs aren't qualified artifacts ?

[King Kong]

If the ToT was gotten pre tokuno patch, then no. Or it was "created" pre tokuno dye patch. So if you bought if off someone or somewhere, it probably is too old.

[Lochnar]

I've only on my 4th week of playing here. All my ToTs I have earned myself, none are bought. None of them will work with the dyes I have also got on my own and not bought, so it's not an age issue. Unless the patch you are referring to was within the last four weeks?

[King Kong]

Only certain things can be dyed with tokuno dye.

I believe they are listed in one of the recent publishes.