Use unique costume ID

src/containers/paint-editor-wrapper.jsx

@@ -55,7 +55,7 @@ const mapStateToProps = (state, {selectedCostumeIndex}) => {
         name: costume && costume.name,
         rotationCenterX: costume && costume.rotationCenterX,
         rotationCenterY: costume && costume.rotationCenterY,
-        svgId: editingTarget && `${editingTarget}${selectedCostumeIndex}`
+        svgId: editingTarget && `${editingTarget}${costume.skinId}`
     };
 };