Minna Designs has some of the most lovely wedding invitations I have ever seen! Minna is a sweetheart to work with and incredibly talented.
I love the navy and magenta color scheme she used to design these wedding invitations. I used copperplate calligraphy in magenta to match for the envelope addressing. (Somehow, writing in pink is SO much more enjoyable than black or brown!)
And I just have to mention the colored edges... if you are planning on a thick invitation that can show this off, you should definitely consider this effect!