diff --git a/src/commands/fontSize.js b/src/commands/fontSize.js
index 7ba76ca3..f8deedbc 100644
--- a/src/commands/fontSize.js
+++ b/src/commands/fontSize.js
@@ -5,7 +5,7 @@
  */
 (function(wysihtml5) {
   var undef,
-      REG_EXP = /wysiwyg-font-size-[a-z\-]+/g;
+      REG_EXP = /wysiwyg-font-size-[0-9a-z\-]+/g;
   
   wysihtml5.commands.fontSize = {
     exec: function(composer, command, size) {
diff --git a/src/commands/foreColor.js b/src/commands/foreColor.js
index 9d9e5e6f..46d40df8 100644
--- a/src/commands/foreColor.js
+++ b/src/commands/foreColor.js
@@ -5,7 +5,7 @@
  */
 (function(wysihtml5) {
   var undef,
-      REG_EXP = /wysiwyg-color-[a-z]+/g;
+      REG_EXP = /wysiwyg-color-[0-9a-z]+/g;
   
   wysihtml5.commands.foreColor = {
     exec: function(composer, command, color) {
diff --git a/src/commands/justifyCenter.js b/src/commands/justifyCenter.js
index 78edc97c..9cc4514c 100644
--- a/src/commands/justifyCenter.js
+++ b/src/commands/justifyCenter.js
@@ -1,7 +1,7 @@
 (function(wysihtml5) {
   var undef,
       CLASS_NAME  = "wysiwyg-text-align-center",
-      REG_EXP     = /wysiwyg-text-align-[a-z]+/g;
+      REG_EXP     = /wysiwyg-text-align-[0-9a-z]+/g;
   
   wysihtml5.commands.justifyCenter = {
     exec: function(composer, command) {
diff --git a/src/commands/justifyLeft.js b/src/commands/justifyLeft.js
index c6c7e150..7d6a1e0e 100644
--- a/src/commands/justifyLeft.js
+++ b/src/commands/justifyLeft.js
@@ -1,7 +1,7 @@
 (function(wysihtml5) {
   var undef,
       CLASS_NAME  = "wysiwyg-text-align-left",
-      REG_EXP     = /wysiwyg-text-align-[a-z]+/g;
+      REG_EXP     = /wysiwyg-text-align-[0-9a-z]+/g;
   
   wysihtml5.commands.justifyLeft = {
     exec: function(composer, command) {
diff --git a/src/commands/justifyRight.js b/src/commands/justifyRight.js
index 80bca1b5..3a7505ba 100644
--- a/src/commands/justifyRight.js
+++ b/src/commands/justifyRight.js
@@ -1,7 +1,7 @@
 (function(wysihtml5) {
   var undef,
       CLASS_NAME  = "wysiwyg-text-align-right",
-      REG_EXP     = /wysiwyg-text-align-[a-z]+/g;
+      REG_EXP     = /wysiwyg-text-align-[0-9a-z]+/g;
   
   wysihtml5.commands.justifyRight = {
     exec: function(composer, command) {