I presume you mean Avanti vice Arriva in your last statement.
And not quite - the XC Voyagers have never had a proper repaint, at all, since new. The bodyside's are still in VT Base livery, with various silver patches applied over the years. All they've had done to them is the removal of the small VT >><< >><< arrows along the bodyside, VT logos, and XC Vinyls applied over the top. If you look closely around the cab ends, as per the EMR 222s in Purple, you can see the outlines of the former liveries underneath. The roofs just hid by the dirt - it's either clever work on the part of XC's livery designers, or pure and utter laziness.