I just took a shower and decided to inspect my hair for the first time after I got it cut.
There was a lot of natural light in the room, and my hair reflected to be a light brown color. However, in my photos everywhere else, it's a solid black. I didn't get it bleached, I didn't do anything to it.
So what is my hair color anyways?
The first queeion I would have to ask are you sure
it really is "natural light?"
I wouldn't call any electric light "Natural"
iMHO if you want natural light step outside in the sun.
I have medium dark brown hair (my original color that I maintain by having my gray colored), with highlights added and a darker stack. The appearance varies strongly with lighting--incandescent makes the highlights very subtle but some kinds of fluorescent lights make it look very blonde overall.
I'm redhead with some blond, and my hair looks great under all kinds of light but fluorescent. Then it gets this ghastly horrid greenish yellow tint. Drives me batshit!