4 Squares, 4 Colors
If you look at the smaller squares, the square inside of the dark grey square pretty clearly looks like it’s a brighter color than the other small square inside the large bright green one. But if you cover up the larger squares, you can see that the two small squares are the exact same color.
No, there isn’t some new curvy marker fad going on. These are just some run-of-the-mill, 100% straight markers, placed at a slight angle…