The phrase "accent strip" refers to a small and distinct area or section that stands out from the rest. It is usually used to highlight or add emphasis to a particular part of something, like a piece of clothing, artwork, or design. Full definition
However, it looks mighty intimidating between the glowing red accent strips on the lid. (laptopmag.com)
The taillights match the headlights with their thin vertical orientation and are separated with a chrome accent strip. (thesupercars.org)
The exterior changes include minor details such as an additional accent strip along the nose and narrower headlights. (fortsmithhonda.traylorhonda.net)