FIG. 1 is a front perspective view of a button cover showing my new design in accordance with a first embodiment;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a cross-sectional view thereof, through the line identified as 6-6 shown in FIG. 3;
FIG. 7 is a right side view thereof;
FIG. 8 is a left side view thereof;
FIG. 9 is a rear perspective view thereof;
FIG. 10 is a front perspective view of a button cover in accordance with a second embodiment;
FIG. 11 is a front elevation view thereof;
FIG. 12 is a rear elevation view thereof;
FIG. 13 is a top plan view thereof;
FIG. 14 is a bottom plan view thereof;
FIG. 15 is a cross-sectional view thereof, through the line identified as 15-15 shown in FIG. 12;
FIG. 16 is a right side view thereof;
FIG. 17 is a left side view thereof;
FIG. 18 is a rear perspective view thereof;
FIG. 19 is a front perspective view of a button cover in accordance with a third embodiment;
FIG. 20 is a front elevation view thereof, the rear elevation being the same as the FIG. 3 view;
FIG. 21 is a top plan view thereof;
FIG. 22 is a bottom plan view thereof;
FIG. 23 is a right side view thereof;
FIG. 24 is a left side view thereof;
FIG. 25 is a rear perspective view thereof;
FIG. 26 FIG. 19 is a front perspective view of a button cover in accordance with a fourth embodiment;
FIG. 27 is a front elevation view thereof, the rear elevation being the same as the FIG. 12 view;
FIG. 28 is a top plan view thereof;
FIG. 29 is a bottom plan view thereof;
FIG. 30 is a right side view thereof;
FIG. 31 is a left side view thereof; and,
FIG. 32 is a rear perspective view thereof.
The dashed lines shown in FIGS. 1-98 represent environmental structure and form no part of the claimed design. The dotted lines shown in the Figures represent the borders between claimed subject matter and unclaimed subject matter and form no part of the claimed design.