Ah, There's a reason for suggesting the Brunswick lined green paint

If you know your 47s, 57009 was rebuilt from 47079 'GJ Churchward', one of the former 4 GWR 150 locos repainted into lined Brunswick Green with GWR Style nameplates (47079 / 484 / 500 / 628). WCRC did of course have 500 in it's active fleet (and what a beast it was!), though sadly it met it's fate thanks to the Ordsall Lane incident and has since been cut up.
Regarding the former Advenza 57s, there is a reason why 2 out of the 3 WCRC returned to traffic. Both 57001 / 006 were lucky in where they were when Cotswold / Advenza failed, however 005 was less fortunate. I believe it had ran out of fuel when it was dumped in the siding next to Cardiff Central (no doubt having been told where to shove it by Arriva's Canton Depot), and left for some time during which we had a particularly harsh winter. Now, any good loco needs to be stored properly if it isn't going to be used during a winter - it wasn't, and ended up with a cracked engine block. This obviously sealed it's fate with WCRC as a spares donor and hasn't ran again since.