I have a butter, a friend of mine has a lesser that is 1 year older. I still don't believe that they are the same morph. After comparing pictures of his and mine when we first got them, and now, the lesser DEFINATELY got darker, while my butter is slightly lighter now than it was 6 months ago.
VERY similar morphs, yes; exactly the same morph, I don't think so.
Anyway, I've not bred mine yet, and he bred his to a pastel. When she's big enough, I'm thinking pastel, pinstripe, or cinnamon, or maybe all 3!