The fact that Estoril Blue is NLA makes it a pick for the my fantasy color league.
Estoril is an era color. The e36 M3, M Roadster and M Coupe made it legendary from 1995-2002.
Another incredible blue of the day is AVUS Blue.
The side by side suggests that MCB is a shade darker than EB.
Current - '11 e92 M3 SG/FR ZCP|ZCV|ZP2|2MK|494|415|6NR|752