What do the jerseys mean in le tour de france?

Yellow Leaders Jersey: Maillot Jaune

Green Points Jersey: Maillot Vert

Polkadot Mountain Jersey: Maillot à pois rouges /Haute Grimpeur

White Young Riders Jersey: Maillot Blanc

Also Awarded is the 'prix de la combativité', for the most aggressive rider.

and the 'lantern rouge' for the last place rider - not a jersey but a red coloured number