diff --git a/package.json b/package.json
index 0b5f8d28805..32c30f2431a 100644
--- a/package.json
+++ b/package.json
@@ -107,7 +107,7 @@
     "scratch-render": "0.1.0-prerelease.20181102130522",
     "scratch-storage": "1.2.0",
     "scratch-svg-renderer": "0.2.0-prerelease.20181101210634",
-    "scratch-vm": "0.2.0-prerelease.20181113174211",
+    "scratch-vm": "0.2.0-prerelease.20181114192419",
     "selenium-webdriver": "3.6.0",
     "startaudiocontext": "1.2.1",
     "style-loader": "^0.23.0",
diff --git a/src/components/monitor/monitor.jsx b/src/components/monitor/monitor.jsx
index 7be0875e5bc..7e6156ff005 100644
--- a/src/components/monitor/monitor.jsx
+++ b/src/components/monitor/monitor.jsx
@@ -19,7 +19,8 @@ const categories = {
     sound: '#CF63CF',
     looks: '#9966FF',
     motion: '#4C97FF',
-    list: '#FC662C'
+    list: '#FC662C',
+    extension: '#0FBD8C'
 };
 
 const modes = {
@@ -106,7 +107,7 @@ MonitorComponent.propTypes = {
 };
 
 MonitorComponent.defaultProps = {
-    category: 'data',
+    category: 'extension',
     mode: 'default'
 };
 
diff --git a/src/containers/list-monitor.jsx b/src/containers/list-monitor.jsx
index f20fd614800..c8d06e511bd 100644
--- a/src/containers/list-monitor.jsx
+++ b/src/containers/list-monitor.jsx
@@ -6,6 +6,7 @@ import {connect} from 'react-redux';
 import {getEventXY} from '../lib/touch-utils';
 import {getVariableValue, setVariableValue} from '../lib/variable-utils';
 import ListMonitorComponent from '../components/monitor/list-monitor.jsx';
+import {Map} from 'immutable';
 
 class ListMonitor extends React.Component {
     constructor (props) {
@@ -24,7 +25,6 @@ class ListMonitor extends React.Component {
         this.state = {
             activeIndex: null,
             activeValue: null,
-            // TODO These will need to be sent back to the VM for saving
             width: props.width || 100,
             height: props.height || 200
         };
@@ -139,9 +139,13 @@ class ListMonitor extends React.Component {
 
         const onMouseUp = ev => {
             onMouseMove(ev); // Make sure width/height are up-to-date
-            // TODO send these new sizes to the VM for saving
             window.removeEventListener('mousemove', onMouseMove);
             window.removeEventListener('mouseup', onMouseUp);
+            this.props.vm.runtime.requestUpdateMonitor(Map({
+                id: this.props.id,
+                height: this.state.height,
+                width: this.state.width
+            }));
         };
 
         window.addEventListener('mousemove', onMouseMove);
diff --git a/src/containers/monitor.jsx b/src/containers/monitor.jsx
index 2f04cb51b7f..0a02e826856 100644
--- a/src/containers/monitor.jsx
+++ b/src/containers/monitor.jsx
@@ -7,6 +7,7 @@ import MonitorComponent, {monitorModes} from '../components/monitor/monitor.jsx'
 import {addMonitorRect, getInitialPosition, resizeMonitorRect, removeMonitorRect} from '../reducers/monitor-layout';
 
 import {connect} from 'react-redux';
+import {Map} from 'immutable';
 import VM from 'scratch-vm';
 
 const availableModes = opcode => (
@@ -31,16 +32,17 @@ class Monitor extends React.Component {
             'handleSetModeToSlider',
             'setElement'
         ]);
-
-        // @todo consume from VM, but need to store until there are APIs to update vm
-        this.state = {
-            mode: props.mode || 'default'
-        };
     }
     componentDidMount () {
         let rect;
+
+        const isNum = num => typeof num === 'number' && !isNaN(num);
+
         // Load the VM provided position if not loaded already
-        if (this.props.x && this.props.y && !this.props.monitorLayout.savedMonitorPositions[this.props.id]) {
+        // If a monitor has numbers for the x and y positions, load the saved position.
+        // Otherwise, auto-position the monitor.
+        if (isNum(this.props.x) && isNum(this.props.y) &&
+            !this.props.monitorLayout.savedMonitorPositions[this.props.id]) {
             rect = {
                 upperStart: {x: this.props.x, y: this.props.y},
                 lowerEnd: {x: this.props.x + this.element.offsetWidth, y: this.props.y + this.element.offsetHeight}
@@ -50,6 +52,11 @@ class Monitor extends React.Component {
             rect = getInitialPosition(
                 this.props.monitorLayout, this.props.id, this.element.offsetWidth, this.element.offsetHeight);
             this.props.addMonitorRect(this.props.id, rect);
+            this.props.vm.runtime.requestUpdateMonitor(Map({
+                id: this.props.id,
+                x: rect.upperStart.x,
+                y: rect.upperStart.y
+            }));
         }
         this.element.style.top = `${rect.upperStart.y}px`;
         this.element.style.left = `${rect.upperStart.x}px`;
@@ -74,25 +81,45 @@ class Monitor extends React.Component {
         this.props.removeMonitorRect(this.props.id);
     }
     handleDragEnd (e, {x, y}) {
+        const newX = parseInt(this.element.style.left, 10) + x;
+        const newY = parseInt(this.element.style.top, 10) + y;
         this.props.onDragEnd(
             this.props.id,
-            parseInt(this.element.style.left, 10) + x,
-            parseInt(this.element.style.top, 10) + y
+            newX,
+            newY
         );
+        this.props.vm.runtime.requestUpdateMonitor(Map({
+            id: this.props.id,
+            x: newX,
+            y: newY
+        }));
     }
     handleNextMode () {
         const modes = availableModes(this.props.opcode);
-        const modeIndex = modes.indexOf(this.state.mode);
-        this.setState({mode: modes[(modeIndex + 1) % modes.length]});
+        const modeIndex = modes.indexOf(this.props.mode);
+        const newMode = modes[(modeIndex + 1) % modes.length];
+        this.props.vm.runtime.requestUpdateMonitor(Map({
+            id: this.props.id,
+            mode: newMode
+        }));
     }
     handleSetModeToDefault () {
-        this.setState({mode: 'default'});
+        this.props.vm.runtime.requestUpdateMonitor(Map({
+            id: this.props.id,
+            mode: 'default'
+        }));
     }
     handleSetModeToLarge () {
-        this.setState({mode: 'large'});
+        this.props.vm.runtime.requestUpdateMonitor(Map({
+            id: this.props.id,
+            mode: 'large'
+        }));
     }
     handleSetModeToSlider () {
-        this.setState({mode: 'slider'});
+        this.props.vm.runtime.requestUpdateMonitor(Map({
+            id: this.props.id,
+            mode: 'slider'
+        }));
     }
     setElement (monitorElt) {
         this.element = monitorElt;
@@ -108,7 +135,7 @@ class Monitor extends React.Component {
                 height={this.props.height}
                 max={this.props.max}
                 min={this.props.min}
-                mode={this.state.mode}
+                mode={this.props.mode}
                 targetId={this.props.targetId}
                 width={this.props.width}
                 onDragEnd={this.handleDragEnd}
diff --git a/src/lib/opcode-labels.js b/src/lib/opcode-labels.js
index 03c7e6ef969..a916fba9397 100644
--- a/src/lib/opcode-labels.js
+++ b/src/lib/opcode-labels.js
@@ -238,7 +238,7 @@ class OpcodeLabels {
     getLabel (opcode) {
         if (opcode in this._opcodeMap) return this._opcodeMap[opcode];
         return {
-            category: 'data',
+            category: 'extension',
             label: opcode
         };
     }