We were attracted to this article from NPR's website not only because the photo looks like a culinary Twister mat. It also includes four smart, practical rules for making cold soups for summer.The writer explains the importance of four things when it comes to cold soup: color (no browning your veggies), texture (use a blender, not a food processor), flavor (you need tartness), and time (four hours minimum to chill).
There are a lot of great tips, like how to preserve the bold, bright color and why that immersion blender is so crucial. Go read it! The recipes for all four soups above are included, too.