I love them both
There is a slight colour variance but I've been informed that it can depend on how the colour takes to the leather.
The bays is a sub - tried so hard to get one that wasn't but I was at Bicester and the sub was there, so I grabbed her whilst I could and thought I could exchange if a non-sub turns up but one hasn't since.
I think I prefer the Lily to be a little brighter, as it's less leather and so stands out a bit more and there's enough leather on the bays for the darker purple to shine...if that makes sense!