Ya, but not all over the place or your skin tones won't look real. For showing atmosphere I usually add touches of the surrounding color to reflected highlight areas. For instance, if someone were sitting on a rock and surrounded by water then I'd recommend putting the ocean colors in the reflected highlight areas. But if you wanted to show sunlight/ moonlight/ or any light shining on the person then I'd add touches of those colors to the highlight and (very little) mid tone areas. See this tutorial for more on reflected highlights & shading [link] .
I hope this reply answers your question and helps you out. If you'd like a different explanation or have another quesiton just let me know.
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