Grey (aka blue) is the latest fashionable colour. In our rescue black and black and white kittens and cats stay with us for months and months as no one wants them. Grey, ginger, white, tabby fly out of the door, even if they're not as friendly as the blacks.
Why are you paying for a kitten at all? Why not rescue? Is colour really that important? You're not buying an accessory, you're taking on a pet.
If I sound pissed off it's because I am. In my house I'm fostering two lovely black kittens (now young cats). I've had them for five months as no one wants them. I've also just taken on two black and whites and another black from a situation they can't go back to.
After conversations with the rehomers at our charity we've decided that they only way we can sort out this situation is for me to rehome two of my gingers and another pretty tabby and white. I've had these cats for around four to five years. But because people are so focussed on colour, if I give these up they will get homes. I will then have space to look after the unpopular colours than don't stand a hope in hell of getting a home.
So yes, I am judging, for which I apologise. If you'd caught me on another day my response might have been more temperate.