Within the workspace, the operator interacts with several buttons, gauges, dials, and controls. The controls within the workspace are always illuminated in either blue, green, yellow or gray. The colors indicate at a glance the current status of the system. A brief description of each color is given below:
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Blue: Blue is seen on soft buttons, sliders, and other user controls. Blue indicates all associated processes with that button are running properly and when the button is clicked, the associated action will take place.
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Green: Green is seen on dials, buttons, sliders, LEDs and other controls. When a soft button is clicked and turns green, it means that the associated action has taken place successfully. The LEDs that indicate application statuses illuminate green when applications are running properly. When autopilot functions are enabled in open-loop control, the readings will turn from yellow to green when the vehicle is being autopiloted or is in fly-by-wire mode.
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Yellow: Yellow is most commonly seen on navigational gauges when the vehicle is being flown in open loop control. The compass heading, depth and altitude are displayed in yellow in this case. Additionally, yellow can indicate that a command has not properly been issued. For example, if a soft button for a relay is clicked, and the button becomes yellow, it means that the command has not successfully been carried out.
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Gray: Gray indicates a particular function is not yet communicating, or that the function is currently offline. Buttons will often be gray only as the software is launched, but in certain circumstances, communications go down and buttons will become gray and unclickable. If communications are lost, the buttons remain in the state they were in at that instant. If a relay was on before comms are lost, it will remain on while the vehicle is powered. When communications are restored, the button will re-illuminate blue and become functional once again.
