I looooove those oxfords, and they're perfect for you! (We have some definite overlap in taste, Ms. Badarse Sophisticate... teal is one of my favorite colors, too, though right now it shows up more in my home decor than in my closet.) I love how the color echoes the colored accents in your hair.
I was also laughing along with your "permission to cull" comment. I do the exact same thing... sometimes even when we want to get rid of something, we *know* it isn't right for us, we just need someone to tell us it's okay to let it go. Hm. That probably applies to more than just physical things, too...