diff --git a/src/style_manager/index.js b/src/style_manager/index.js
index 5d11c66a1..06269eda9 100644
--- a/src/style_manager/index.js
+++ b/src/style_manager/index.js
@@ -53,6 +53,11 @@ import Properties from './model/Properties';
 import PropertyFactory from './model/PropertyFactory';
 import SectorsView from './view/SectorsView';
 
+export const evAll = 'style';
+export const evPfx = `${evAll}:`;
+export const evPropUp = `${evPfx}property:update`;
+export const evCustom = `${evPfx}custom`;
+
 export default () => {
   var c = {};
   let properties;
@@ -65,11 +70,12 @@ export default () => {
 
     PropertyFactory: PropertyFactory(),
 
-    /**
-     * Name of the module
-     * @type {String}
-     * @private
-     */
+    events: {
+      all: evAll,
+      propertyUpdate: evPropUp,
+      custom: evCustom
+    },
+
     name: 'StyleManager',
 
     /**
@@ -101,13 +107,21 @@ export default () => {
         toListen,
         debounce((...args) => {
           this.select(em.getSelectedAll());
-          em.trigger('style:custom');
+          this.__trgCustom();
         })
       );
 
       return this;
     },
 
+    __trgCustom() {
+      this.em.trigger(this.events.custom);
+    },
+
+    __trgEv(event, ...data) {
+      this.em.trigger(event, ...data);
+    },
+
     onLoad() {
       // Use silent as sectors' view will be created and rendered on StyleManager.render
       sectors.add(c.sectors, { silent: true });
diff --git a/src/style_manager/model/Property.js b/src/style_manager/model/Property.js
index 78dd71eaf..61e02b61a 100644
--- a/src/style_manager/model/Property.js
+++ b/src/style_manager/model/Property.js
@@ -23,13 +23,13 @@ export default class Property extends Model {
     const name = this.getName();
     const value = this.getFullValue();
 
-    const changed = this.changedAttributes();
-    const previous = keys(changed).reduce((a, i) => {
+    const to = this.changedAttributes();
+    const from = keys(to).reduce((a, i) => {
       a[i] = this.previous(i);
       return a;
     }, {});
-    console.log('Update targets', { name, value, changed, previous, opts });
 
+    sm.__trgEv(sm.events.propertyUpdate, { property: this, from, to });
     !opts.__up && sm.addStyleTargets({ [name]: value });
   }