Element Colour

If a logic element has an error, or if it is simply not activated, then you can recognize this due to the colour of the element.

Green
The element is working fine.

Orange
The output of this element is being simulated.

Grey
The element does not have a fault, but it is deactivated.

Red
The element has a fault: either an input has no value, or the output it is linked to no longer exists.