Removing urvt transparency, cleanup tmux config: remove mouse support, fix colors using new style syntax

x/.Xresources

@@ -1,8 +1,14 @@
 URxvt*scrollBar:	false
 URxvt.font:     xft:Terminus:size=14:antialias=true
 URxvt.boldFont: xft:Terminus:bold:size=14:antialias=true
-URxvt*transparent: true
-URxvt*shading: 5
+URxvt*inheritPixmap: false
+!URxvt*transparent: false
+!URxvt*shading: 5
+
+!!! Real transparency (compositing)
+!urxvt.depth: 32
+!urxvt*background: rgba:0000/0000/0200/c800
+!URxvt.background: rgba:1111/1111/1111/dddd
 
 URxvt*perl-ext-common:  default,matcher
 URxvt*matcher.button:   1
@@ -14,7 +20,6 @@ URxvt*.termName: rxvt-unicode-256color
 
 ! special
 *.foreground:   #c5c8c6
-!*.background:   #1d1f21
 *.background:   #222222
 *.cursorColor:  #c5c8c6