well at my friend’s mendhi they asked us to wear blue, any shade of blue
and i was noticing through facebook a few of my friends were not bridesmaids technically but the bride said to them hey on my wedding day please all wear white, not off white but white, or at another girls wedding the girlfriends all wore blue. (with the blue bride she made some cute mendhi outfits for her girls but the other stuff wasn’t custom made)
I saw one bridal picture and the bride was a red and blue bride and the boys had blues to match their sister or cousin whomever and the mom and sisters and girl cousins (i assume) wore red outfits or red and blue custom outfits to match the dulhan’s lengha.
i also went to a graduation party and the dress code was red, black and white. it worked out nicely for pics and all. however i wouldn’t tell all my guests to wear a color just close friends bc it does look cute in pictures.