Thanks!
I definitely had a hard time determining the sweet spot between "too obvious" and "too difficult" with regards to the coin differentiation. On one hand I did not want it to be TOO obvious as in like if I were to color every fake coin red; since they are supposed to be a fake of the real thing so I did want some challenge for the player to differentiate the two at least at first. On the other hand at one point during the development the real coins and the fake coins actually made optical illusions lol