Fix xterm Zenburn scheme

dotfiles.config/Xlib/colorscheme/zenburn.Xdefaults

@@ -23,22 +23,24 @@ URxvt.color13:          #ec93d3
 URxvt.color14:          #93e0e3
 URxvt.color15:          #ffffff
 
-xterm.color0:           #353535
-xterm.color8:           #666666
-xterm.color1:           #AE4747
-xterm.color9:           #EE6363
-xterm.color2:           #556B2F
-xterm.color10:          #9ACD32
-xterm.color3:           #DAA520
-xterm.color11:          #FFC125
-xterm.color4:           #6F99B4
-xterm.color12:          #7C96B0
-xterm.color5:           #8B7B8B
-xterm.color13:          #D8BFD8
-xterm.color6:           #A7A15E
-xterm.color14:          #F0E68C
-xterm.color7:           #DDDDDD
-xterm.color15:          #FFFFFF
+xterm*foreground:       #dcdccc
+xterm*background:       #3f3f3f
+xterm*color0:           #353535
+xterm*color8:           #666666
+xterm*color1:           #AE4747
+xterm*color9:           #EE6363
+xterm*color2:           #556B2F
+xterm*color10:          #9ACD32
+xterm*color3:           #DAA520
+xterm*color11:          #FFC125
+xterm*color4:           #6F99B4
+xterm*color12:          #7C96B0
+xterm*color5:           #8B7B8B
+xterm*color13:          #D8BFD8
+xterm*color6:           #A7A15E
+xterm*color14:          #F0E68C
+xterm*color7:           #DDDDDD
+xterm*color15:          #FFFFFF
 
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