Just to add to James reply...
630 has always been black since they got it from the shortline in NC.
Sister engine was green and gold when the Southern had it.
The Southern Green was applied to 4501, cause the Southern wanted it to look like their Green and Gold PS-4 4-6-2's from the good old days. 4501 was always black in revenue service, and only Green when in excursion service as James pointed out. I am hoping for black when it comes out, but am also hoping it will run some doubleheaded trips with 630 instead of those Stesiel (my new word) powered trips operated these days.
Greg Scholl
PS Enjoyed the video James