diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 582315661a..7510f2e42c 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -3716,6 +3716,7 @@ phutil_register_library_map(array(
     'PhabricatorProjectWatchController' => 'applications/project/controller/PhabricatorProjectWatchController.php',
     'PhabricatorProjectWatcherListView' => 'applications/project/view/PhabricatorProjectWatcherListView.php',
     'PhabricatorProjectWorkboardBackgroundColor' => 'applications/project/constants/PhabricatorProjectWorkboardBackgroundColor.php',
+    'PhabricatorProjectWorkboardBackgroundTransaction' => 'applications/project/xaction/PhabricatorProjectWorkboardBackgroundTransaction.php',
     'PhabricatorProjectWorkboardProfileMenuItem' => 'applications/project/menuitem/PhabricatorProjectWorkboardProfileMenuItem.php',
     'PhabricatorProjectWorkboardTransaction' => 'applications/project/xaction/PhabricatorProjectWorkboardTransaction.php',
     'PhabricatorProjectsAncestorsSearchEngineAttachment' => 'applications/project/engineextension/PhabricatorProjectsAncestorsSearchEngineAttachment.php',
@@ -9166,6 +9167,7 @@ phutil_register_library_map(array(
     'PhabricatorProjectWatchController' => 'PhabricatorProjectController',
     'PhabricatorProjectWatcherListView' => 'PhabricatorProjectUserListView',
     'PhabricatorProjectWorkboardBackgroundColor' => 'Phobject',
+    'PhabricatorProjectWorkboardBackgroundTransaction' => 'PhabricatorProjectTransactionType',
     'PhabricatorProjectWorkboardProfileMenuItem' => 'PhabricatorProfileMenuItem',
     'PhabricatorProjectWorkboardTransaction' => 'PhabricatorProjectTransactionType',
     'PhabricatorProjectsAncestorsSearchEngineAttachment' => 'PhabricatorSearchEngineAttachment',
diff --git a/src/applications/project/controller/PhabricatorProjectBoardBackgroundController.php b/src/applications/project/controller/PhabricatorProjectBoardBackgroundController.php
index 99260d1770..be4049bb73 100644
--- a/src/applications/project/controller/PhabricatorProjectBoardBackgroundController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardBackgroundController.php
@@ -37,7 +37,8 @@ final class PhabricatorProjectBoardBackgroundController
       $xactions = array();
 
       $xactions[] = id(new PhabricatorProjectTransaction())
-        ->setTransactionType(PhabricatorProjectTransaction::TYPE_BACKGROUND)
+        ->setTransactionType(
+            PhabricatorProjectWorkboardBackgroundTransaction::TRANSACTIONTYPE)
         ->setNewValue($background_key);
 
       id(new PhabricatorProjectTransactionEditor())
diff --git a/src/applications/project/editor/PhabricatorProjectTransactionEditor.php b/src/applications/project/editor/PhabricatorProjectTransactionEditor.php
index e73db3b026..393c4569f6 100644
--- a/src/applications/project/editor/PhabricatorProjectTransactionEditor.php
+++ b/src/applications/project/editor/PhabricatorProjectTransactionEditor.php
@@ -30,67 +30,9 @@ final class PhabricatorProjectTransactionEditor
     $types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
     $types[] = PhabricatorTransactions::TYPE_JOIN_POLICY;
 
-    $types[] = PhabricatorProjectTransaction::TYPE_BACKGROUND;
-
     return $types;
   }
 
-  protected function getCustomTransactionOldValue(
-    PhabricatorLiskDAO $object,
-    PhabricatorApplicationTransaction $xaction) {
-
-    switch ($xaction->getTransactionType()) {
-      case PhabricatorProjectTransaction::TYPE_BACKGROUND:
-        return $object->getWorkboardBackgroundColor();
-    }
-
-    return parent::getCustomTransactionOldValue($object, $xaction);
-  }
-
-  protected function getCustomTransactionNewValue(
-    PhabricatorLiskDAO $object,
-    PhabricatorApplicationTransaction $xaction) {
-
-    switch ($xaction->getTransactionType()) {
-      case PhabricatorProjectTransaction::TYPE_BACKGROUND:
-        $value = $xaction->getNewValue();
-        if (!strlen($value)) {
-          return null;
-        }
-        return $value;
-    }
-
-    return parent::getCustomTransactionNewValue($object, $xaction);
-  }
-
-  protected function applyCustomInternalTransaction(
-    PhabricatorLiskDAO $object,
-    PhabricatorApplicationTransaction $xaction) {
-
-    switch ($xaction->getTransactionType()) {
-      case PhabricatorProjectTransaction::TYPE_BACKGROUND:
-        $object->setWorkboardBackgroundColor($xaction->getNewValue());
-        return;
-    }
-
-    return parent::applyCustomInternalTransaction($object, $xaction);
-  }
-
-  protected function applyCustomExternalTransaction(
-    PhabricatorLiskDAO $object,
-    PhabricatorApplicationTransaction $xaction) {
-
-    $old = $xaction->getOldValue();
-    $new = $xaction->getNewValue();
-
-    switch ($xaction->getTransactionType()) {
-      case PhabricatorProjectTransaction::TYPE_BACKGROUND:
-        return;
-     }
-
-    return parent::applyCustomExternalTransaction($object, $xaction);
-  }
-
   protected function validateAllTransactions(
     PhabricatorLiskDAO $object,
     array $xactions) {
diff --git a/src/applications/project/storage/PhabricatorProjectTransaction.php b/src/applications/project/storage/PhabricatorProjectTransaction.php
index 8e026df045..158c2480c0 100644
--- a/src/applications/project/storage/PhabricatorProjectTransaction.php
+++ b/src/applications/project/storage/PhabricatorProjectTransaction.php
@@ -3,8 +3,6 @@
 final class PhabricatorProjectTransaction
   extends PhabricatorModularTransaction {
 
-  const TYPE_BACKGROUND = 'project:background';
-
   // NOTE: This is deprecated, members are just a normal edge now.
   const TYPE_MEMBERS    = 'project:members';
 
@@ -56,22 +54,12 @@ final class PhabricatorProjectTransaction
     return parent::shouldHide();
   }
 
-  public function shouldHideForFeed() {
-    switch ($this->getTransactionType()) {
-      case self::TYPE_BACKGROUND:
-        return true;
-    }
-
-    return parent::shouldHideForFeed();
-  }
-
-
   public function shouldHideForMail(array $xactions) {
     switch ($this->getTransactionType()) {
       case PhabricatorProjectWorkboardTransaction::TRANSACTIONTYPE:
       case PhabricatorProjectSortTransaction::TRANSACTIONTYPE:
       case PhabricatorProjectFilterTransaction::TRANSACTIONTYPE:
-      case self::TYPE_BACKGROUND:
+      case PhabricatorProjectWorkboardBackgroundTransaction::TRANSACTIONTYPE:
         return true;
     }
 
@@ -136,11 +124,6 @@ final class PhabricatorProjectTransaction
           }
         }
         break;
-
-      case self::TYPE_BACKGROUND:
-        return pht(
-          '%s changed the background color of the project workboard.',
-          $author_handle);
     }
 
     return parent::getTitle();
diff --git a/src/applications/project/xaction/PhabricatorProjectWorkboardBackgroundTransaction.php b/src/applications/project/xaction/PhabricatorProjectWorkboardBackgroundTransaction.php
new file mode 100644
index 0000000000..620959b0a2
--- /dev/null
+++ b/src/applications/project/xaction/PhabricatorProjectWorkboardBackgroundTransaction.php
@@ -0,0 +1,26 @@
+<?php
+
+final class PhabricatorProjectWorkboardBackgroundTransaction
+  extends PhabricatorProjectTransactionType {
+
+  const TRANSACTIONTYPE = 'project:background';
+
+  public function generateOldValue($object) {
+    return $object->getWorkboardBackgroundColor();
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $object->setWorkboardBackgroundColor($value);
+  }
+
+  public function getTitle() {
+    return pht(
+      '%s changed the background color of the project workboard.',
+      $this->renderAuthor());
+  }
+
+  public function shouldHide() {
+    return true;
+  }
+
+}