.... Having now re-acquainted myself with the original XC livery on one of my own photographs, I take back my comment earlier about thinking that a Colas Rail diamond-shaped logo would not look good applied to the power car. As a 'retired-but-hardwired' professional graphic designer specialising in corporate identity I really should have checked at my time of posting!
I am now of the opinion that the added Colas Rail logo would look good and all that would need to be done is to peel off the CrossCountry logotype on the lower silver painted area (see my photo below). Personally I would enjoy seeing some of the Colas Rail operated Class43s pay homage to their previous operator's service through their liveries. Many railway enthusiasts like to see variety and some passengers may also enjoy it when they are not glued to their mobile phones!
Pictured in 2022 is 43 301, the very first HST Power Car to be operated by CrossCountry in 2008. I don't know what her fate has been and whether she is now part of the Colas Rail fleet or not.
HST WORKING CROSS COUNTRY SINCE 2008 by
Robin Procter, on Flickr