I brightened the pic up in Lightroom for my own aesthetic purposes, but I don’t think I went overboard personally. The branch is actually a dried tip of a succulent so maybe that’s where you’re seeing coloration? Here’s another shot, unedited and zoomed out a little more. https://lemmy.world/pictrs/image/05fac88c-b255-428c-b595-48ae8a4f0cbf.jpeg