Early Bundeswehr Leopard 2A4 colour?

[HeavyArty]

Recently asked and fully discussed.

When did the Bundeswehr start using RAL6014 Gelboliv?

Were the early post war tanks like the M41 and M47 painted in Gelboliv, or were they in U.S. olive drab? If the latter, were they ever repainted later in life? TIA.