The ornamental design for the computer shade, as shown and described.
FIG. 1 is a front elevation view of a computer shade showing my new design, the broken lines are for illustrative purposes only and form no part of the claimed design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a bottom plan view thereof; and,
FIG. 5 is a right side elevation view thereof, the left side view being a mirror image of that shown.