Sci-fi book about man with different color personalities? Possibly Constantine or similar?

[Mark]

Kiln People?

Has clones with different colors that say what its function is

[Andy]

This may be Aristoi by Walter Jon Williams Aristoi. It has the multiple personalities with one that is a killer; the main character is Gabriel, though

[A book away from an episode of hoarders]

This kind of reminds me of .

It is YA though so there wasn't a board meeting and it has been years since I read it but that was what the description immediately made me think of. His different personalities speak in his head and there is one, if I remember correctly, that only comes out in emergency situations.

So, its a long shot but I thought I'd let you know anyway.

[Lobstergirl, au gratin]

Jack, I take it you ruled out Andy and Cristina's suggestions? Are you still looking or did you find it?

[Lobstergirl, au gratin]

The OP's account is deleted. Moving to Now We'll Never Know.