I love Space Wolves (no hate please

) but I'm not fond of their classic light blue scheme.
The following picture is quite close to what I would like to achieve (do not pay attention to the... brother on the far right) but I'm not experienced enough to determine which paint I should use to produce something close.
Hence my question, what references would you use to reproduce this grey and brass/gold ?
Preferably Prince August/Vallejo but citadel is fine too.
Thanks in advance !