Adding vfr Waypoint to to FSX database

I trying to add custom waypoint to FSX/P3D database so we can use in the default GPS and also been able to create a flight plan with them.
I have to use the vor because in Italy the vfr point name are much more longer then 5 character and I still have the problem with the ident in 5 character.
I am wondering, if it is possible to create custom waypoint with other method but been able to create flightplan.
Is it possible to change color of the vor icon or other navaid in the night version as the blu is not so clear on the map.
Is the map inside of the gps a bitmap in the gauges or is coming from the 3d mesh of fsx?
Thank' s for any input

<Vor
dme="TRUE"
dmeOnly="TRUE"
lat="45.7200001180172"
lon="7.27000012993813"
alt="1.0M"
type="HIGH"
frequency="108.000"
range="12345.0M"
magvar="0"
region="LI"
ident="MWW1"
name="AOSTA WEST">
<!-- VFR reporting point -->
<Dme
lat="0"
lon="0"
alt="0.0M"
range="12345.0M"/>
</Vor>