They also carry their numbers on the side of the cab, at the bottom.The repainted units carry their number on the cab roof. Not sure why, it would need a drone or helicopter to see them.
Oh! I read wrong! The Little Book of Numbers still holds true! 378135/136/147/150/206/232 are in the new livery. It seems to be going slowly though!And there's still quite a few 378/1's in the old livery.