The ornamental design for a red lightarmpad, as shown and described.
FIG. 1 is a perspective view of a red light arm pad showing my new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is a perspective view of the red light arm pad where the red light arm pad is in a configuration of use.
The short thick evenly spaced broken lines in the drawings depict stitching and form no part of the claimed design. The long thin evenly spaced broken lines in the drawings depict portions of red light arm pad and form no part of the claimed design.