So online I went and executed a flurry of searches--"exterior window trim style," "window trim simple," "shou sugi ban window trim," "modern window trim"...
And pretty much realized that I could do whatever I wanted. Heck yes!
I imagine living simply, sustainably, and self-sufficiently, and my first step is to live small. This is my journey building my own tiny house on wheels... my very own Going Home.