I recommend white shoes or pink ones
What Color Shoes Looks Good On A Lilac Bridesmaid Dress?
White, beige or a lighter gray.
White or beige .... Or dyed to match lilac satin.
Strappy silver sandals.
I would have the bridesmaids wear ivory or white, according to which color wedding dress the bride is wearing. If her dress is off white or ivory, let the shoes match. When photos are taken you don't want the shoes to glare out in the pictures.