the pink leaves in the world juliette's manor, are all now grey

i bought the map "Juliettes Manor" and the map came with a texture pack which included pink leaves (instead of oak leaves i think). Now all the previous pink leaves are all grey. At first even when i would place down a new leaf block that shouldve been pink it is grey but now when i place down that leaf block it is the normal green as if it didnt have the texture pack but everything else still has the texture except for those pink leaves.