Funky bungalows, quaint cottages, and towering Victorians have more in common than most homeowners realize: oddly shaped and sized windows, which means finding that just-right winning drape or curtain combination can be an exercise in frustration. But there’s one East Bay curtainary, the Alameda Shade Shop, which consistently rides to redecorators’ rescue with five-plus decades of measuring, mounting, fringing, and installing to its credit. The well-schooled proprietors Dan and Diane Hayes, who could write a manual based on their knowledge of roller shades alone, specialize in Victorian window treatments, effortlessly mimicking what would have graced stately turn-of-the-century homes. Their inventory is expansive, and the couple is good at color matching and recommending fabrics. While Victorians are the major emphasis, the Hayes also prove equally adept at other styles and bring great pride in workmanship to all aspects of their custom window shade business, which has operated from the same location since 1949.