For tombstones, combine white and black candy to create gray. Fill molds and refrigerate to set. Use spooky green candy melts to mold bottom of R.I.P. tombstone.
For skeletons, use a cut parchment bag with white candy to pipe bone details; refrigerate to set. Cover remainder of skeleton with light cocoa candy; refrigerate to set. Use largest round cut out to make disk stands for skeletons; place cut out on cookie sheet and fill with light cocoa candy; refrigerate to set; unmold. Attach skeleton to base with melted candy; let set.