Just this one red leaf in all those other colors. It’s from a Virginia Creeper vine that was mingling with the morning glories, though all the other leaves were still mostly green. But when the sun came out and touched this leaf it was as if the leaf itself was emitting the vibrant red.
I originally planned to crop out the morning glories thinking the red would be even more vibrant against all that green, its natural complement, and without the distraction of any other color in the photo, but I was wrong. The purple actually enhances the red.
I enjoy the shapes of the vines too; where did we humans get the idea for fences like that anyway? And the contrast of geometric and organic shapes was why I focused on this little scene to begin with, and then the sun came out and it got even better.