I'm sure you know how to start this clock. XD Click the button on left if you want to turn on/off ticking. For hour striking, same on the right. You cannot turn the striking off when the clock is striking. You can now change the colour on this clock by dragging the slider on the top left.
Inspired by Anker. Desk Clock with Front Pendulum has arrived: https://scratch.mit.edu/projects/1033606748/