I recently posted this at FBBO. I installed some rigid frame LED lights in my workshop and pool house. I like the bright white lighting, but they have the yellowish ones too. Banggood.com. Very inexpensive and you don't need the old fixtures - just mount directly to ceiling or under cabinets. You'll need to buy appropriate 12V transformers too to match the wattage you install. For example a 15M strip runs about 72Watts. Read the specs for wattage per meter and get the right size transformers.