Can someone help me decide the colors for a dress in my drawing?

Hello! I’m looking for colors to make the pony’s dress in this drawing here: https://s14.postimg.org/4i5ym8fj5/azure_gala_dress.png

I can’t seem to find any colors that go with her mane and fur well.

If her personality is needed to help you come up with colors, she’s pretty reserved and grumpy most of the time, but she has a soft side that only her friends know of.