Aesthetic Connundrum

I'm having the sliding glass door in my bedroom replaced when I get the studio windows. It's single-paned aluminum, the most poorly insulated part of the house and an eyesore to boot. Replacing the slider is a no-brainer -- I should have had it done when I paid for the front windows.

Unfortunately it brings up the problem of trim.

( Being an Aesthetic Connundrum, or, an Exploration of how the Simplest of Ideas Have Innumerable Complications )

TL;DR: My house has an identity crisis, I can't make decisions, and fiber-board sucks.