The products in this post were provided by The Home Depot. All opinions and photography are my own. Thanks for supporting the brands that support this blog! Who doesn't love the look of black windows set against a backdrop of crisp, white walls? While the cost to replace your windows is steep, I was able to achieve this look for about $100! Follow along to see how I replaced our builder-grade window trim and gave it a black designer finish with DIY mullions. Would you believe this is where…