The ornamental design for an illuminatingstandoffdesign, as shown and described herein.
FIG. 1. Is a perspective view of my illuminating standoff design;
FIG. 2. Is a perspective view of the other side of my illuminating standoff design;
FIG. 3. Is a right side view thereof, the left side being a mirror image thereto;
FIG. 4. Is a bottom view thereof;
FIG. 5. Is a top view thereof;
FIG. 6. is a front side view thereof; and,
FIG. 7. Is a rear side view thereof.
The broken lines in the drawings show environment that forms no part of the claimed design. Applicant makes no claim as to color with regards to the present invention.