To expect everyone at my wedding to stick to the colour scheme?

[Autumnalbride]

I'm having an autumn themed wedding. I've asked everyone, all the wedding party, family and all the guests to wear autumn colours - brown, orange, yellow, red etc.
Some of the men want to wear grey suits but I am upset by this because I don't see grey as an autumn colour. They say they will wear autumn coloured ties and accessories but I said I want the suits to be in Autumn colours
Is this unreasonable?

In what way?

The reason reverses are annoying is you give different advice depending on your proximity to the situation.

Eg Mum and dad are separated. They have joint custody and one lets the child have unlimited screen time and one likes strict limits.

My answer would depend on who was asking because I might have an opinion on screen time but there is no point giving energy to the other parent’s contact time so my answer would differ a bit depending on who was asking.

It just causes confusion and nonsense.