diff --git a/src/ibp/shape/elevator.js b/src/ibp/shape/elevator.js
index 718dcd491..be2efba41 100644
--- a/src/ibp/shape/elevator.js
+++ b/src/ibp/shape/elevator.js
@@ -33,8 +33,8 @@ export default class elevator extends Group {
 			},
 			width: model.width,
 			height: model.height,
-			fillColor: model.fillColor ||'#adadad',
-			stroke: model.fillColor ||'#adadad',
+			fillColor: model.fillColor ||'#313131',
+			stroke: model.fillColor ||'#313131',
 			lineWidth: 0
 		}
 		});
diff --git a/src/ibp/shape/elevatorBack.js b/src/ibp/shape/elevatorBack.js
index 759571bb7..b9f10f068 100644
--- a/src/ibp/shape/elevatorBack.js
+++ b/src/ibp/shape/elevatorBack.js
@@ -21,12 +21,14 @@ export default class elevatorBack extends Group {
 			draggable: false,
 			// model.draggable ||
 			shape: {
-				cx: model.point.x + model.width/6*5,
-				cy: model.point.y + model.height/8,
-				r: model.width/6
+				cx: (model.point.x + model.width/6*5).toFixed(2),
+				cy: (model.point.y + model.height/8).toFixed(2),
+				r: (model.width/6).toFixed(2)
 			},
 			style: {
-				fill: this.model.fillColor || '#adadad'
+				brushType: 'fill',
+				fill: this.model.fillColor || '#313131',
+				lineWidth: 0
 			}
 		});
 
@@ -35,17 +37,18 @@ export default class elevatorBack extends Group {
 			z: model.z,
 			draggable: false,
 			shape: {
-				points: [[model.point.x+model.width/6, model.point.y + model.height], [model.point.x+model.width/6*2, model.point.y + model.height],
-					[model.point.x+model.width/6*5, model.point.y + model.height/8*2],
-					[model.point.x+model.width/6*5, model.point.y],
-					[model.point.x+model.width/6*4, model.point.y],
-					[model.point.x+model.width/6, model.point.y + model.height/8*6]
+				points: [[(model.point.x+model.width/6).toFixed(2), (model.point.y + model.height).toFixed(2)], [(model.point.x+model.width/6*2).toFixed(2), model.point.y + model.height],
+					[(model.point.x+model.width/6*5).toFixed(2), (model.point.y + model.height/8*2).toFixed(2)],
+					[(model.point.x+model.width/6*5).toFixed(2), model.point.y],
+					[(model.point.x+model.width/6*4).toFixed(2), model.point.y],
+					[(model.point.x+model.width/6).toFixed(2), (model.point.y + model.height/8*6).toFixed(2)]
 				]
 			},
 			style: {
-				stroke: model.stroke || '#adadad',
-				lineWidth: model.lineWidth,
-				fill: model.fillColor || '#adadad'
+				brushType: 'fill',
+				stroke: model.stroke || '#313131',
+				lineWidth: 0,
+				fill: model.fillColor || '#313131'
 			}
 		});
 
@@ -55,12 +58,14 @@ export default class elevatorBack extends Group {
 			// path: 'M 0 0 Q -70 -50 0 -100 0 -100 L 150 -400 L 200 -400 Q 270 -350 200 -300 200 -300 L 50 0',
 			draggable: false,
 			shape: {
-				cx: model.point.x + model.width/6,
-				cy: model.point.y + model.height/8*7,
-				r: model.width/6
+				cx: (model.point.x + model.width/6).toFixed(2),
+				cy: (model.point.y + model.height/8*7).toFixed(2),
+				r: (model.width/6).toFixed(2)
 			},
 			style: {
-				fill: this.model.fillColor || '#adadad'
+				fill: this.model.fillColor || '#313131',
+				lineWidth: 0,
+				brushType: 'fill'
 			}
 		});