Vu+Duo2 VFD display modify

When I had the VU + Ultimo I did for fun doing some changes on the information displayed on the fluorescent display (VFD) with modify the file skin_user.xml in the directory /etc/enigma2
I'd like to do something for the DISPLAY VFD on Vu+Duo2, someone has already tried?

Tnx codar, but this section link is for LCD color display, i intended the central blue VFD display ;)