No matter how strongly you want to believe you are seeing blue and green spirals here, there is no blue color in this image. There is only green, red and orange. What you think is blue is actually green. You can check this through Photoshop or by zooming, if you need an affirmation. Your eyes cheat you.
If you don’t believe your eyes, check this image enlarged:
Care to pop in to my new project todayilearned.co.uk, a blog about unusual and interesting things.
Discovered on Akiyoshi Kitaoka’s site