If you're going with a full suit, just keep it in the season's color palettebrowns, earthy neutrals, and the aforementioned sweet spots of deep green, orange, burgundy, and purple
Where does it all come from
Closure: Invisible back zipper for a seamless finish
Everyone was given a plastic tumbler with $300 worth of poker chips to play with
Although stiletto heels can present a bit of an issue for walking on grass for less experienced stiletto wearers (I swear I was born in 4 heels!), you could also consider a nude block heeled sandal (I wore my Circus by Sam Edelman Abigal Platform Sandals in Light Brown to a Garden Party last summer) or nude espadrilles (my Aldo Muschetts are most-worn pair) if the wedding is ultra casual
The third color adds some much-needed interest (a la the fashion rule of 3) and fun to an otherwise fairly one-dimensional outfit