We claim the ornamental design for a cover portion for optical storage media tray, as shown and described.
FIG. 1 is a bottom perspective view of a cover portion for optical storage media tray showing our new design of the present invention in an open position; and,
FIG. 2 is a bottom view thereof in a closed position.
The ornamental design which is claimed is shown in solid lines in the drawings. Any broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.