Simple colour display for showing triggers, boolean, and floating point numbers
The colour will act differently depending on the type of input you feed into it.
A Trigger input will set the colour to the maximum value, and then fade out over time
A Boolean input will turn the colour 'on' and 'off'
A Float input (between 0.0 and 1.0) will set the brightness of the colour to that level
Double-click on the circle to bring up a colour dialog.