Mixing upholstery and casegoods from different vendors, the cohesion always breaks at wood tone, sheen, and that pesky 18 vs 19-inch seat height when I’m trying to get a calm, continuous read through a 24’ living–dining combo. What vendor-neutral resources have you used — stain/veneer decks or crosswalks to ML Campbell/Mohawk finishes — that help furniture from different lines feel like one family without resorting to full custom?