Thanks
@93turbo2 so much for the link to the Lamin-x films; the amber looks like it may be a solution to my quandary.
My Ascent will be white, and I'd been trying to think about what I could do across the back to tone down the chrome and still be as visible as possible. (Well, without applying striped reflective tape like a utility vehicle!) Black seemed too dark, red seemed too flashy, but using their amber film to cover the chrome from tail light to tail light across the lift gate seems like a possibility.
By the way, I'd never seen blacked out lights here in Texas, and it turns out that it's not legal here.
https://www.dps.texas.gov/rsd/vi/lighting.htm