Now here's a color scheme and wedding theme I've seen a lot of on the internet. Teal and purple have always gone together well, and so it's only natural for folks to love peacock plumage. I'm a fan, though with it so popular these days it's becoming a little cliche. Peacock accents I think add some fun to a wedding, but I probably wouldn't theme the whole event around these birds.
Sharon Naylor sums up some of the symbolism nicely here:
"In Greco-Roman mythology, the peacock is connected to Hera/Juno who, lore says, made the peacock from Argus with his hundred eyes. Thus, that mark on the peacock’s tail feathers that looks like an eye and in some legends symbolizes the “eyes of the stars.”
In Hindu culture, the Peacock is associated with the deity Lakshmi, representing benevolence, patience, kindness, compassion and good luck.
The peacock is also a symbol of Kwan-Yin in Asian lore, as an emblem of love, compassionate watchfulness, nurturing and kind-heartedness.
In Persian lore, the peacock symbolizes protection over royalty (and since you’re the queen of your wedding day….)
In Christian lore, the peacock represents the “all-seeing” church and has been connected to renewal as well as holiness."