diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Behavior.png b/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Behavior.png
new file mode 100644
index 00000000..9720266c
Binary files /dev/null and b/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Behavior.png differ
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Behavior@2x.png b/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Behavior@2x.png
new file mode 100644
index 00000000..a4250297
Binary files /dev/null and b/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Behavior@2x.png differ
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Contents.json b/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Contents.json
new file mode 100644
index 00000000..72d1733a
--- /dev/null
+++ b/Source/Resources/Images/Images.xcassets/PrefToolbar-Behavior.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "filename" : "Behavior.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "Behavior@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Candidates.png b/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Candidates.png
new file mode 100644
index 00000000..3a354376
Binary files /dev/null and b/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Candidates.png differ
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Candidates@2x.png b/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Candidates@2x.png
new file mode 100644
index 00000000..19f0ca05
Binary files /dev/null and b/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Candidates@2x.png differ
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Contents.json b/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Contents.json
new file mode 100644
index 00000000..1a7ca514
--- /dev/null
+++ b/Source/Resources/Images/Images.xcassets/PrefToolbar-Candidates.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "filename" : "Candidates.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "Candidates@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Contents.json b/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Contents.json
new file mode 100644
index 00000000..02872c2e
--- /dev/null
+++ b/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "filename" : "Output.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "Output@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Output.png b/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Output.png
new file mode 100644
index 00000000..b751d6e4
Binary files /dev/null and b/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Output.png differ
diff --git a/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Output@2x.png b/Source/Resources/Images/Images.xcassets/PrefToolbar-Output.imageset/Output@2x.png
new file mode 100644
index 00000000..d2e41293
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