The Archibald Leitch blue criss-cross all the way around
that is my suggestion - not on the inside though, on the outside
it fits well with the industrial surroundings too
the tower is the tower and it's never been part of the ground though. it is where it is and it's special there, there's no real need to incorporate it into the new ground.
be boss if the pump-house or whatever the old building is on the site could be incorporated into the corner of the ground somehow though, like the church is at Goodison - but not impeding seating availability and entirely controlled by the club, but just so it's something "different" to other new stadiums