I totally get Ariella's point, but I think it might be better to go with a name that isn't just about the dolls. It makes it more personal and less "sales-y" to have a blog that is more personal. I think "Melissa Loves Color" is really cute and easy to remember.
I once read somewhere in one of these lovely Etsy teams that if you are going to blog, then your blog should make you come across as a "blogger who crafts, not a crafter who blogs". It just helps make a better connection with people, which will lead them to your shop. Either way you decide to go, I wish you the best of luck!
I just started my blog and it's so exciting:
http://amberdaydreams.blogspot.com/