Roller Shade Cassette Cover

FIG. 1 is a top, front and right perspective view of a roller shade cassette cover showing our new design; FIG. 2 is a bottom, back and left 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 thereof, shown in an environment of use. The dash-dot-dash break lines symbolize breaks in the length of the roller shade cassette cover in which the claimed design is embodied. The appearance of any portion of the roller shade cassette cover between the break lines forms no part of the claimed design. The evenly spaced dashed broken lines in the FIG. 9 are for the purposes of indicating the usage environment of the roller shade cassette cover and form no part of the claimed design.