Tweaked titlebars.

Paper/gtk-3.0/apps/gnome-terminal.css

@@ -94,7 +94,7 @@ TerminalWindow .dynamic-notebook tab.right:active {
 
 TerminalScreen,
 VteTerminal {
-    -TerminalScreen-background-darkness: 0.95;
+    /*-TerminalScreen-background-darkness: 0.95;*/
     background-color: @terminal_background;
     color: @terminal_text;
 }

Paper/gtk-3.0/widgets/check-radio.css

@@ -93,7 +93,38 @@ GtkCheckButton:selected:focus {
     color: @backdrop_selected_foreground;
 }
 
-/* Symbolic */
+/* Labels */
+.check GtkLabel,
+.check:active GtkLabel,
+.check:focus GtkLabel,
+.check:hover GtkLabel, 
+.radio GtkLabel,
+.radio:active GtkLabel,
+.radio:focus GtkLabel,
+.radio:hover GtkLabel {
+    color: @text;
+}
+
+.check:backdrop GtkLabel,
+.check:backdrop:hover GtkLabel,
+.check:active:backdrop GtkLabel,
+.radio:backdrop GtkLabel,
+.radio:backdrop:hover GtkLabel,
+.radio:active:backdrop GtkLabel {
+    color: @backdrop_text;
+}
+
+.check:insensitive GtkLabel,
+.radio:insensitive GtkLabel {
+    color: @insensitive_text;
+}
+
+.check:insensitive:backdrop GtkLabel,
+.radio:insensitive:backdrop GtkLabel {
+    color: mix(@backdrop_text, @insensitive_text, 0.5);
+}
+
+/* Symbolic Radio */
 .menu .menuitem.radio {
   -gtk-icon-source: -gtk-icontheme("radio-symbolic");
   color: @text;
@@ -145,4 +176,5 @@ GtkCheckButton:selected:focus {
 .menuitem.radio:insensitive {
     background: none;
     box-shadow: none;
-}
+}
+

Paper/gtk-3.0/widgets/header-bar.css

@@ -67,6 +67,9 @@
 /**********************
  * Header bar buttons *
  **********************/
+.header-bar .button {
+    padding: 13px;
+}
 
 .header-bar .flat,
 .header-bar .button,
@@ -78,7 +81,6 @@
     background-color: transparent;
     background-image: none;
     box-shadow: none;
-    padding: 13px;
     transition: all 300ms cubic-bezier(0.3, 0.5, 0.5, 0.9);
 }
 
@@ -182,7 +184,6 @@
 .header-bar .flat:backdrop,
 .header-bar .suggested-action .button:backdrop,
 .header-bar .image-button:backdrop {
-    padding: 13px;
     border-radius: 0px;
     background-color: transparent;
     background-image: none;

Paper/gtk-3.0/widgets/titlebar.css

@@ -63,6 +63,10 @@
  * Header bar buttons *
  **********************/
 
+.titlebar .button {
+    padding: 13px;
+}
+
 .titlebar .flat,
 .titlebar .button,
 .titlebar .title,
@@ -72,7 +76,6 @@
 .titlebar .image-button {
     background-color: transparent;
     background-image: none;
-    padding: 13px;
     transition: all 300ms cubic-bezier(0.3, 0.5, 0.5, 0.9);
 }
 
@@ -175,7 +178,6 @@
 .titlebar .flat:backdrop,
 .titlebar .suggested-action .button:backdrop,
 .titlebar .image-button:backdrop {
-    padding: 13px;
     border-radius: 0px;
     background-color: transparent;
     background-image: none;