The ornamental design for a safetycoverall with luminoussilhouette, as shown and described.
FIG. 1 is a top view of a safety coverall with luminous silhouette, it being understood that only the luminous silhouette of the safety coverall with luminous silhouette is being claimed, according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a bottom view of FIG. 1;
FIG. 5 is a first side view of FIG. 1; and,
FIG. 6 is a second side view of FIG. 1.
The dashed broken lines illustrate environmental structure and form no part of the claimed design.