I feel the same about pink! When I had DS I would have said "no pink" if he was a girl.
However since then, friends of mine have had girls, and I've discovered how difficult it is to find non pink stuff! When I was shopping for a present for one of my friends baby girls I was determined to get her non pink stuff, but I'd left it too late to do mail order. I spent 2 hours!!! trying to find her something non pink on the high street. I was determined! But I failed, there simply wasn't anything (except for white stuff with teddies which isn't me friend's style at all).
In the end I had to admit defeat and got her something with minimal pink (pink spots on purple background).
So although in principle YANBU to as for no pink, in reality it might be unachievable (ridiculously!) and it' could well sour relations between you and well meaning friends and relatives if you reject or scorn their gifts.
But then on the other hand it's a bit silly to end up with a load of stuff you can't use!
What I will do now if I have a girl next time, is to say I prefer not to only dress my DD in pink, and that I really like the White baby grows, and the brightly coloured stuff from h&m / Sainabury's / katvig / wherever and hope they take the hint!
But I realise now that asking elderly relatives or really busy people to scour the shops for something very rare is unreasonable. So I will now accept the pink stuff with good grace.
It's also a question of money. There are some lovely inependants and also makers like Katvig and Brights and Stripes which do lovely stuff, but at approaching £20 a babygro, it could be a big ask for some.
It's a ridiculous situation and makes me
at the idiot shops actually.