4.8i color
 

For 4.8i model, I have seen Estorial Blue and LeMans Blue mentioning. Are these the same colors? If not, what is the difference?

AFAIK estoril is not available on the 4.8i.

Estoril is a lighter blue than Lemans.

Estoril was on the 4.6iS and LeMans is available on the 4.8. You probably could get the much lighter Estoril color through Individual.