FIG. 1 is a front perspective view of an ornamental design for a casing for a portable solar powered light according to the present invention;
FIG. 2 is a back perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a first side view thereof;
FIG. 6 is a second side view thereof;
FIG. 7 is a third side view thereof; and,
FIG. 8 is a fourth side view thereof.