SO. MANY. OPTICAL. ILLUSIONS!! Do the circles appear cream? They're actually pure white. Stare at the centre. Does the screen appear to have a fisheye look? Stare at the center again. Do the circles near the edge seem to have smaller, dark grey circles inside them?
I got this from a book called Computer Coding Projects For Kids Using Scratch by Carol Vorderman. Recommended settings: 88, 3 62, 9 7, 2 7, 39 41, 100 59, 2
