Yesss. I so badly want the Unicorn horn, and I only want it in the pearl white, as well.
Logically, I know there's no difference, but the look of a toy does greatly impact how I feel about it. If it's meant to look like a certain thing, I want it to actually look like that thing. The horn, I want to be the pearlescent white of a unicorn horn. I have both tentacles and love that they look like actual tentacles. If they were all one solid colour in, like, black, I'd be less intrigued, or even the weird blue swirly thing like they've got going on with the horn.
It's also why, whilst green is my favourite colour, I can't seem to go for the green Mustang. If I were to get it, I would have to get it in a fleshtone. A realistic penis shape should be a realistic penis colour.