You can change the color of the part of the browser just by moving the mouse over special areas. The mouse movement in the sensitive areas creates a dimmer effect as you find the "sweet spot" where colors change by using a circular motion.
Move the mouse along the lower diagonal line of black square boxes. You will find
two areas where the cursor will change from an arrow to a pointing finger.
Move the mouse gingerly in increasing circular movements and you will see a change of color.
As the color changes new words will appear. This highly interactive feature is present in: