I have this plan where my bridesmaids' clothes are coordinated with each other but they don't match. Explaining this idea to people has been difficult, though. Now, after months of waiting, I present for your viewing pleasure: Bridesmaids That Coordinate But Don't Match!
At the ceremony (the bride is in the center):
At the reception (once again the bride in the middle):
For both of these, I tried to pick a style of embellishment and a family of colors that would coordinate well. The top set has more traditional-feeling style elements (zardosi and kundan work, contrasting borders). Most of the outfits have some amount of orange or turquoise in them. For the bottom set I chose mostly single-color outfits that had sheer fabric. Those all happened to have metallic, swirly embellishment. The similarity in style gave me freedom to choose a wider range of colors. FYI, I don't have 10 bridesmaids. I'm just trying to show a lot of options.