An object of the present invention is to provide an ink set for ink jet capable of obtaining printed articles superior in warm color representation and weather resistance, an ink jet coloring process and a colored product for outdoor. An ink set for ink jet containing an orange pigment ink (a) and a red pigment ink (b) wherein the orange pigment ink (a) includes iron oxide serving as an orange pigment and a solvent, and the red pigment ink (b) includes iron oxide serving as said red pigment; at least one of a pigment selected from condensed polycyclic compound pigments, said at least one of a pigment serving as said red pigment; and a solvent.