You are not alone!

Unfortunately for my DH I regularly did that very same thing. For me it was always one black shoe and one blue one. I'd phone DH from work when I finally noticed my feet, and he'd have to bring me one shoe and take the other colored one home.

My other "thing" was I would forever be leaving the front opening zipper in my work trousers down. I'd often not even notice until my first visit of the day to the ladies'. Nobody ever told me, so I have to hope it was because no-one ever noticed.