Definitely looks more bright and adorable. Pink and Yellow fits her style. ^W^
Looks better than the first version. Though I think the centre part of the coller should be the same colour as the rest of it. Otherwise, keep the rest of the colour scheme.
It's a different look compared to the blue, but it's not a bad one. The little splashes of yellow add some much needed and well placed contrast to the purple in my opinion.