The ornamental design for a decorated container, as shown and described above.
FIG. 1 is a top front perspective view showing my new open-work decorated container design, wherein the clasps, walls and overall configuration of the container are shown in broken lines for illustrative purposes only and form no part of the claimed design;
FIG. 2 is a left end view thereof, the right end being a mirror image;
FIG. 3 is a front elevation thereof, the rear elevation be a mirror image;
FIG. 4 is a bottom view thereof, wherein the hinges are shown in broken lines for illustrative purposes; and,
FIG. 5 is a perspective view similar to FIG. 1, showing the container in the open position to reveal the fabric liner, the exterior surface of which is visible through the openings in the walls, wherein the internal fastener is shown in broken lines for illustrative purposes only and forms no part of the claimed design.