Sun Highlighted Hair?

Happy Wednesday everyone! 
This weekend, I took out my front flat twists , pulled one side into a puff, and left the other side down as a side bang. After I took the picture, I realized that my hair had highlights. At first, I thought it could have possibly been the way the light was shinning on it. But, I think the sun lightened the color of my hair. My natural hair color is jet black! I remember having the same issue when I would perm my hair. I should have worn summer hats all summer, lol. The good news is that I don't have to worry about using Koolaid, Henna, or a coloring system on my hair, lol...rocking on! Here's a picture of my hair with the light turned off.

Does your hair have sun highlights?