To aswer a couple of questions, I'm not sure sure about the "rose" grey. I've heard mixed things on it. I've heard some say that all greys go through the rose stage and I've heard them actively described as a color "rose grey".
I'm also not sure about the tetrarch spots. I DID look into that, and that's exactly what they appear like. Thus far, they are staying. Even in her winter coat, her big butt oval was very visible.
And thank you so much for all your feedback and comments! I love Holly to death and I LOVE watching her go through these phases and changes in her coat. I was especially surprised to see a bit of a countershaded faux dorsal peeking through as if to validate all the talk we had on the other thread about grey producing primitive markings.
I've never heard much on the melanoma side of greys. I did own a 19 year old "white" grey and he never had such problems. But I will definitely read up on it and educate myself! As of now, not as educated on it, I wouldn't let it stop you from owning your dream grey. I've had quite a few friends with greys, and none had problems with melanomas (or perhaps as the comment above suggests, just never caused complications) =)
I'll take some more pics today since everyone seems to enjoy them!