diff --git a/Paper/gtk-3.0/apps.css b/Paper/gtk-3.0/apps.css
index 9d352e0..a491a8a 100644
--- a/Paper/gtk-3.0/apps.css
+++ b/Paper/gtk-3.0/apps.css
@@ -20,6 +20,7 @@
  * Apps *
  ********/
 
+@import url("apps/appcenter.css");
 @import url("apps/archive-manager.css");
 @import url("apps/baobab.css");
 @import url("apps/bijiben.css");
@@ -37,7 +38,7 @@
 @import url("apps/gnome-contacts.css");
 @import url("apps/gnome-disks.css");
 @import url("apps/gnome-documents.css");
-/*@import url("apps/gnome-music.css");*/
+@import url("apps/gnome-music.css");
 @import url("apps/gnome-photos.css");
 /*@import url("apps/gnome-software.css");*/
 @import url("apps/gnome-system-monitor.css");
diff --git a/Paper/gtk-3.0/apps/appcenter.css b/Paper/gtk-3.0/apps/appcenter.css
new file mode 100644
index 0000000..7689525
--- /dev/null
+++ b/Paper/gtk-3.0/apps/appcenter.css
@@ -0,0 +1,33 @@
+/* Copyright 2016 Sam Hewitt.
+*
+* This file is part of the Paper GTK theme.
+*
+* The Paper GTK theme is free software: you can redistribute it
+* and/or modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* The Paper GTK theme is distributed in the hope that it will be
+* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+* Public License for more details.
+*
+* You should have received a copy of the GNU General Public License along
+* with the Paper GTK theme. If not, see http://www.gnu.org/licenses/.
+*/
+
+@define-color appcenter #378BE6;
+
+/**********
+ * Header *
+ **********/
+
+AppCenterMainWindow .titlebar,
+AppCenterMainWindow .header-bar {
+    background-color: @appcenter;
+}
+
+AppCenterMainWindow .titlebar:backdrop,
+AppCenterMainWindow .header-bar:backdrop {
+    background-color: shade(@appcenter,0.9);
+}
\ No newline at end of file
diff --git a/Paper/gtk-3.0/apps/noise.css b/Paper/gtk-3.0/apps/noise.css
index 7e88122..6818c12 100644
--- a/Paper/gtk-3.0/apps/noise.css
+++ b/Paper/gtk-3.0/apps/noise.css
@@ -16,7 +16,7 @@
 * with the Paper GTK theme. If not, see http://www.gnu.org/licenses/.
 */
 
-@define-color noise #FF7D2A;
+@define-color noise #EE6020;
 
 /**********
  * Header *
diff --git a/Paper/gtk-3.0/granite-widgets.css b/Paper/gtk-3.0/granite-widgets.css
index 7692bfe..cb70307 100644
--- a/Paper/gtk-3.0/granite-widgets.css
+++ b/Paper/gtk-3.0/granite-widgets.css
@@ -88,4 +88,8 @@ GraniteWidgetsWelcome GtkLabel {
 GraniteWidgetsWelcome .h1,
 GraniteWidgetsWelcome .h3 {
     color: alpha(@foreground, 0.8);
+}
+
+GraniteWidgetsModeButtonItem {
+    border-radius: 0;
 }
\ No newline at end of file
diff --git a/Paper/gtk-3.0/gtk-widgets-assets-dark.css b/Paper/gtk-3.0/gtk-widgets-assets-dark.css
index ba74880..995f2cb 100644
--- a/Paper/gtk-3.0/gtk-widgets-assets-dark.css
+++ b/Paper/gtk-3.0/gtk-widgets-assets-dark.css
@@ -320,34 +320,6 @@ GtkSwitch.slider:insensitive {
     background-position: 0 center;
 }
 
-/*******************
- * Pane separators *
- *******************/
-.pane-separator,
-.pane-separator:backdrop {
-    background: url("assets/scalable/pane-separator-grip.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-}
-
-.pane-separator:hover {
-    background: url("assets/scalable/pane-separator-grip-prelight.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-}
-
-.pane-separator.vertical {
-    background: url("assets/scalable/pane-separator-grip-vertical.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-}
-
-.pane-separator.vertical:hover {
-    background: url("assets/scalable/pane-separator-grip-vertical-prelight.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-}
-
 /*********************
  * GtkScale's slider *
  *********************/
diff --git a/Paper/gtk-3.0/gtk-widgets-assets.css b/Paper/gtk-3.0/gtk-widgets-assets.css
index bd1d4bc..8580f3a 100644
--- a/Paper/gtk-3.0/gtk-widgets-assets.css
+++ b/Paper/gtk-3.0/gtk-widgets-assets.css
@@ -321,37 +321,6 @@ GtkSwitch.slider:insensitive {
 }
 
 
-/*******************
- * Pane separators *
- *******************/
-.pane-separator {
-    background: url("assets/scalable/pane-separator-grip.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-    background-size: 2px 22px;
-}
-
-.pane-separator:hover {
-    background: url("assets/scalable/pane-separator-grip-prelight.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-    background-size: 2px 22px;
-}
-
-.pane-separator.vertical {
-    background: url("assets/scalable/pane-separator-grip-vertical.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-    background-size: 2px 22px;
-}
-
-.pane-separator.vertical:hover {
-    background: url("assets/scalable/pane-separator-grip-vertical-prelight.svg");
-    background-repeat: no-repeat;
-    background-position: center;
-    background-size: 2px 22px;
-}
-
 /*********************
  * GtkScale's slider *
  *********************/
diff --git a/Paper/gtk-3.0/gtk-widgets.css b/Paper/gtk-3.0/gtk-widgets.css
index 2cea4a8..b38c0b5 100644
--- a/Paper/gtk-3.0/gtk-widgets.css
+++ b/Paper/gtk-3.0/gtk-widgets.css
@@ -79,7 +79,7 @@
 @import url("widgets/miscellaneous.css");
 @import url("widgets/notebook.css");
 @import url("widgets/osd.css");
-@import url("widgets/overflow.css");
+/*@import url("widgets/overflow.css");*/
 @import url("widgets/popovers.css");
 @import url("widgets/progressbars.css");
 @import url("widgets/scales.css");
diff --git a/Paper/gtk-3.0/widgets/header-bar.css b/Paper/gtk-3.0/widgets/header-bar.css
index 516b591..fcd8dc5 100644
--- a/Paper/gtk-3.0/widgets/header-bar.css
+++ b/Paper/gtk-3.0/widgets/header-bar.css
@@ -38,7 +38,6 @@
 
 .maximized .header-bar {
     border-radius: 0px;
-    box-shadow: inset 0 1px 0 0 rgba(255,255,255,0.1);
     box-shadow: none;
 }
 
@@ -67,7 +66,7 @@
     color: @header_text;
 }
 
-.header-bar .button.button.linked .title,
+.header-bar .button.linked .title,
 .header-bar .button.flat .title {
     padding: 0;
 }
@@ -122,7 +121,7 @@
 .header-bar .button,
 .header-bar .flat,
 .header-bar .button.image-button,
-.header-bar .button.linked,
+.header-bar .linked,
 .header-bar .suggested-action .button,
 .header-bar .button.text-button,
 .header-bar .titlebutton {
@@ -132,15 +131,20 @@
     border: none;
     box-shadow: none;
     text-shadow: none;
-    padding: 10px 12px;
+    padding: 10px;
     color: @header_text;
 }
 
+
+.header-bar .button.image-linked {
+    padding: 13px;
+}
+
 /* Buttons (Hover) */
 .header-bar .button:hover,
 .header-bar .flat:hover,
 .header-bar .button.image-button:hover,
-.header-bar .button.linked:hover,
+.header-bar .linked:hover,
 .header-bar .suggested-action .button:hover,
 .header-bar .button.text-button:hover,
 .header-bar .titlebutton:hover {
@@ -157,7 +161,7 @@
 .header-bar .button:backdrop,
 .header-bar .flat:backdrop,
 .header-bar .button.image-button:backdrop,
-.header-bar .button.linked:backdrop,
+.header-bar .linked:backdrop,
 .header-bar .suggested-action .button:backdrop,
 .header-bar .button.text-button:backdrop,
 .header-bar .titlebutton:backdrop {
@@ -174,7 +178,7 @@
 .header-bar .button:insensitive,
 .header-bar .flat:insensitive,
 .header-bar .button.image-button:insensitive,
-.header-bar .button.linked:insensitive,
+.header-bar .linked:insensitive,
 .header-bar .suggested-action .button:insensitive,
 .header-bar .button.text-button:insensitive,
 .header-bar .titlebutton:insensitive {
@@ -191,7 +195,7 @@
 .header-bar .button:checked,
 .header-bar .flat:checked,
 .header-bar .button.image-button:checked,
-.header-bar .button.linked:checked,
+.header-bar .linked:checked,
 .header-bar .suggested-action .button:checked,
 .header-bar .button.text-button:checked,
 .header-bar .titlebutton:checked {
@@ -201,7 +205,6 @@
     border-radius: 0px;
     box-shadow: none;
     text-shadow: none;
-    background-color: alpha(#000,0.1);
     color: @header_text;
     box-shadow:inset 0 -2px 0 0 @header_text;
 }
@@ -210,14 +213,14 @@
 .header-bar .button:focus,
 .header-bar .flat:focus,
 .header-bar .button.image-button:focus,
-.header-bar .button.linked:focus,
+.header-bar .linked:focus,
 .header-bar .suggested-action .button:focus,
 .header-bar .button.text-button:focus,
 .header-bar .titlebutton:focus,
 .header-bar .button:active,
 .header-bar .flat:active,
 .header-bar .button.image-button:active,
-.header-bar .button.linked:active,
+.header-bar .linked:active,
 .header-bar .suggested-action .button:active,
 .header-bar .button.text-button:active,
 .header-bar .titlebutton:active {
@@ -252,39 +255,49 @@
 /* Entries */
 
 .header-bar .entry {
-    background: none;
+    background-color: alpha(#000, 0.2);
     color: @header_text;
-    border-radius: 0px;
-    border: 1px solid transparent;
+    border-radius: 2px;
+    padding: 6px 4px;
+    border: none;
     box-shadow: none;
 }
 
+.header-bar .entry.image {
+    color: @header_text;
+}
+
 .header-bar .entry:active,
 .header-bar .entry:focus {
-    background: none;
-    color: @header_text;
+    background-color: @base;
+    color: @text;
+    box-shadow: none;
     border: none;
 }
 
+.header-bar .entry:active.image,
+.header-bar .entry:focus.image {
+    padding-right: 6px;
+    color: @text;
+}
+
 .header-bar .entry:backdrop {
-    background: none;
-    color: @backdrop_header_text;
+    box-shadow: none;
+    color: alpha(@header_text, 0.5);
     border: none;
 }
 
-.header-bar .entry:selected,
-.header-bar .entry:selected:focus {
-    color: @header;
-    background-color: @header_text;
-}
-
 .header-bar .entry.image {
-    color: @insensitive_base;
+    color: alpha(@header_text, 0.5);
 }
 
-.header-bar .entry.image.left {
-    padding-right: 6px;
-    color: @header_text;
+
+.header-bar .entry:active:backdrop,
+.header-bar .entry:focus:backdrop {
+    background-color: alpha(@base, 0.5);
+    color: @text;
+    box-shadow: none;
+    border: none;
 }
 
 
diff --git a/Paper/gtk-3.0/widgets/list-rows.css b/Paper/gtk-3.0/widgets/list-rows.css
index a3fae6b..da0b299 100644
--- a/Paper/gtk-3.0/widgets/list-rows.css
+++ b/Paper/gtk-3.0/widgets/list-rows.css
@@ -31,3 +31,8 @@
     background-color: @selection;
     color: @selection_foreground;
 }
+
+.list-row:hover {
+    background-color: shade(@selection, 1.1);
+    color: @selection_foreground;
+}
diff --git a/Paper/gtk-3.0/widgets/separators.css b/Paper/gtk-3.0/widgets/separators.css
index 4f5b075..4345065 100644
--- a/Paper/gtk-3.0/widgets/separators.css
+++ b/Paper/gtk-3.0/widgets/separators.css
@@ -36,49 +36,20 @@ GtkSeparator:backdrop,
 }
 
 .pane-separator {
-    -GtkPaned-handle-size: 2px;
-    padding: 4px;
-    background-color: @background;
     border: 1px solid @separator;
     border-width: 0px;
-    color: @base;
 }
 
 .pane-separator.vertical {
-    -GtkPaned-handle-size: 2px;
-    padding: 4px;
-    background-color: @background;
     border: 1px solid @separator;
     border-left-width: 0px;
     border-right-width: 0px;
-    color: @base;
 }
 
-.pane-separator:hover,
-.pane-separator:selected {
-    color: @selection;
-}
-
-.pane-separator:backdrop,
-.pane-separator:hover:backdrop {
-    background-color: @backdrop_background;
-}
-
-.notebook .pane-separator,
-.notebook .pane-separator:hover {
-    background-color: @background;
-}
-
-.notebook .pane-separator:backdrop,
-.notebook .pane-separator:hover:backdrop {
-    background-color: @base;
-}
 
 .sidebar-pane-separator,
 .sidebar-pane-separator:hover,
 .sidebar-pane-separator:selected {
-    -GtkPaned-handle-size: 2px;
-    background-image: none;
     background-color: @separator;
     border: 1px solid @border;
 }