Made inactive workspaces transparent

Also set active workspace's (focused on other screen)
color/transparency.

configs/ranger/rc.conf

@@ -34,7 +34,7 @@ set column_ratios 1,3,4
 set hidden_filter ^\.|\.(?:pyc|pyo|bak|swp)$|^lost\+found$|^__(py)?cache__$
 
 # Show hidden files? You can toggle this by typing 'zh'
-set show_hidden false
+set show_hidden true
 
 # Ask for a confirmation when running the "delete" command?
 # Valid values are "always", "never", "multiple" (default)

configs/ranger/rifle.conf

@@ -140,6 +140,7 @@ mime ^video, terminal, !X, has mplayer   = mplayer -- "$@"
 #-------------------------------------------
 # Documents
 #-------------------------------------------
+ext pdf = ask
 ext pdf, has llpp,     X, flag f = llpp "$@"
 ext pdf, has zathura,  X, flag f = zathura -- "$@"
 ext pdf, has mupdf,    X, flag f = mupdf "$@"