Shoes!

I have a wedding to go to this weekend. After freaking out about having an appropriate dress, I am now freaking out about shoes. I have some pretty boring strappy patent leather low heels, but have an urge to spice up the outfit with something more colorful...
What do you think?
a)

Too racy?

b)
Too boring?

c)
Too conventional?

d)
Too Casual?

I'm not sure which way to go...
Though, I'll most likely end up wearing what I've got. Cause I like to covet, but don't like to spend.