Honeywell BENDIXKing xCruze 110 Operating Handbook page 11

If the autopilot is receiving a valid GPS signal but the signal is
varying greatly from the last received signal, the DG numbers will be
GRAY. This could be seen when the GPS first acquires satellites and
the autopilot DG is slewing to the current reading. This should only
be seen temporarily. If it remains permanently, this could indicate a
problem with the GPS output. This is shown in Figure 4.1.2d.
If the autopilot is receiving a valid GPS signal that contains
waypoint information, such as a flight plan or GPSS steering
information, the DG numbers will be BLUE. This is shown in Figure
4.1.2e.
8300-089
Figure 4.1.2c
Figure 4.1.2d
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