The ornamental design for a coloringcontainer, as shown and described.
FIG. 1 is a front, top perspective view of a coloring container showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a right side elevation view thereof; and,
FIG. 7 is a left side elevation view thereof. The broken lines in the figures showing environment are for illustrative purpose only and form no part of the claimed design.
In the drawings, the broken lines in FIGS. 1-7 depict portions of the design that form no part of the claim.