We also have big trouble with the not existing "Classic" UI theme option in Lync / SfB mode.
We have several locations of our company, each of them running a Skype for Business Branch Server
with more than 250 phone users together.
The VVX 410 phones now - with the 5.1.x firmware - show the classic UI behaviour as before,
the VVX500 and VVX600 phones are banned to the - for us useless - "Modern" theme.
The Skype for business favorite contacts on a VVX410 are shown in white letters,
on the VVX500/600 they now are shown in black letters on a white background for each contact key,
which brings severe trouble to us with our company background image.
The only commonly usable background color to use with our 3 different phone types now is a mid to dark grey background
caused by the different UI theme behaviour of the phones.
We really need an option to get rid of the new Modern UI in timefor VVX500/600,
in the opinion of all users the "Modern" UI theme has not enough contrast.
Here a high contrast UI is needed , all our users do not want a Skype lookalike theme for the phones.
In the meantime we unfortunately have to rollback the firmware to 4.5.x.
Can Polycom please unlock the theme switching feature in the next release for the Lync / SfB mode?
The new "Modern" UI leaves its color design in a call and partially shows the old behaviour with dark colors,
so it looks like an early alpha release for us.
An option to switch the light blue background color of the headline with clock and date
and also the background of the softkeys to dark grey , dark blue or other user defined colors
for the new "Modern " UI would be a great idea.
White letters on a light blue background are never a good idea.
Regards,
Christian Voß
Systems Engineer
Mayr Melnhof Karton AG
Vienna