The ornamental design for a trimelement for a light fixture, as shown and described.
FIG. 1 is a perspective view of a trim element for a light fixture showing my new design in its' intended environment as part of a generally tubular light fixture, shown in broken line as it is shown for purposes of illustration only and forms no part of the claimed design.
FIG. 2 is a top view of the trim element for a light fixture shown in FIG. 1.
FIG. 3 is a bottom view of the trim element for a light fixture shown in FIG. 1.
FIG. 4 is a right side view of the trim element for a light fixture shown in FIG. 1, a left side view being a mirror image thereof; and,
FIG. 5 is a front view of the trim element for a light fixture shown in FIG. 1.