The ornamental design for a dispenser with a backlightingfeature, as shown and described.
FIG. 1 is a right side perspective view of the dispenser, showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a right side elevation view thereof, the left side being a mirror image thereof;
FIG. 4 is a top view thereof; and,
FIG. 5 is a bottom view thereof.
The broken lines depict environmental structure (e.g., a hidden portion of the dispenser) and do not form a part of the claim. The stippling surrounding the dispenser at the back wall represents backlighting forming a halo around the dispenser.