I really like this. It's not your standard sunset shot, but the colours are amazing. Love the greens and reds and the blues. The contrast between the smoothness of the water and the roughness of the rock works really well. Good job!
The color of the water is great and the pastel shades contrasts nicely with the grey of the rock. I like how still the water is also, the rocks under the water that look like patterns within the blue coloring, and the slight green of the rock reflection. Good sharpness too. I'm guessing the rock was attached to something, which is a shame as I think having room completely around the rock would have looked good, but I like this nevertheless.