"Things You Wouldn't Know If We Didn't Blog Intermittently."
04 March 2017
There are NO red pixels in this picture
Your brain sees the objects being bathed in blue light, so it compensates by adding a red that is not there. The fact that the objects are strawberries accentuates the illusion, but is not a necessary feature.
Further discussion and explanation (and a photo with the "red" sampled to show that it is actually grey) at the source article in Vice's Motherboard.