https://fr-cabinet-1.atl1.digitaloceanspaces.com/research/Stuck-in-paris-(165).html
Look for clothes in champagne, navy and even black (yes, it is totally modern to wear black to a wedding!) for a refined color palette.
https://fr-accounting-11.nyc3.digitaloceanspaces.com/research/business-world-(206).html
When looking for mother of the bride dresses, firstly, consider the general gown code on the invite.