I don't think the color adds anything to the photo. If anything I would lighten up the original to get rid of the dark spot at top/center.
You coloured the sky but not the sea or ground. Why is this?
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I think your original image is to contrasty (is that a word) to work off
I am not sure if selective colouring really does anything for this picture
also over the rock faces you seem to have ghosting possibly where you have painted over them or something
It's an interesting look, but doesn't do much for the photo.