Four color challenge
Complete the coloring of this map, so that no two adjacent regions are the same color. You can only use four colors: Blue, Green, Red, and Purple. Click on the regions (quadrilaterals) to color them. To change the color, click again on the same region.
This puzzle has many solutions. You can see one here: A solution
Updated version using Coloreando el mapa by Ignacio Larrosa Cañestro