Depend on what clothes you wear. You will need to share your clothes and style with us, maybe couple pics when you have it on, so we could help choice color for you.
It's your phone; it's your choice. Only you know which you prefer. I prefer grey. My wife prefers navy. My daughter prefers pink & purple with sparkles (unicorns and ice cream cones are optional).
I noticed that their colors are different in person than the website.. I thought the lilac color was so cute on the website but in person it looked like a blue case!