Bridesmaid Jewelry

I didn't gift my bridesmaids jewelry but I don't think the color matters. The only thing I will say as someone who is allergic to certain metals make sure whatever jewelry you decide on that it will be something they will be able to wear.

I think the best gifts are ones that take the recipient's preferences into consideration. So you are absolutely going about this the right way. Wanting them to like their gifts is WAY more important than having everything matching.

I think you should gift them in which metal suits them most as with bride bridesmaid should also see best in their attire.