I've been playing around with sunset colours. I'm wondering if there is an emotional button that can be accessed by using this palette. In my still somewhat limited experience, sunset/sunrise photos tend to get the most extensive and immediate reaction from random people (i.e., people who don't follow your feed) on Instagram. That's one of the main reasons I'm using Instagram, as a gauge of what appeals and what doesn't. It's certainly not perfect feedback, but it's better than asking friends and family.
Above is a curvature-blended version of the original photo, "Sunset Marina," by Mr. Brendel, available in the Creative Commons under a CC BY license. At least, I assume CC BY, because the page actually specifies this: "Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License," which I haven't seen before.
Of course, sunsets and sunrises come in an infinity of variations, but what almost all of them share is the distinctive prismatic shift from indigo-esque blue to ambery yellow, with all those rich reds and oranges in between. It's a very warm and rich palette, so much so that it can suffer from over-saturation. The leggings' design below tries to balance that issue somewhat.