What is claimed is the ornamental design for a warning badge, as shown and described.
FIG. 1 is a perspective view of a warning badge, showing a first octagonal embodiment of the new design;
FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof;
FIG. 5 is a front elevational view of a second hexagonal embodiment, the rear elevational view being a mirror image thereof;
FIG. 6 is a top plan view of FIG. 5; and,
FIG. 7 is a left-side elevational view of FIG. 5, the right-side elevational view being a mirror image thereof.
In each embodiment of the design, vertical shading lines represent the color red, and cross-hatched shading lines represent the color yellow. The broken lines showing a person in FIG. 1 and text in FIGS. 1, 3 and 6 are environmental matter and form no part of the claimed design.