+ Added new keyword to support background transparency

TRANSPARENTCOLORS Yes/No
  default is "No". If set to "Yes" BLACK background color will become
  transparent. Supported for ncurses compilation, otherwise do nothing.

cfgs/config/advanced.cfg

@@ -1237,6 +1237,11 @@ SCREENSHADOWS YES
 ;INTENSECOLORS YES
 INTENSECOLORS NO
 
+// Use background transparency?
+// Default is "No". If set to "Yes" BLACK background color will become
+// transparent. Supported for ncurses compilation, otherwise do nothing.
+;TRANSPARENTCOLORS YES
+
 // Select default color set.
 COLORSET DETECT     ; Select based on screencard and intense value.
 ;COLORSET NORMAL    ; Select standard color set.

cfgs/config/advanced.rus

@@ -1443,6 +1443,12 @@ ScreenShadows Yes
 ;IntenseColors Yes
 IntenseColors No
 
+// <20>ᯮ<EFBFBD>짮<EFBFBD><ECA7AE><EFBFBD><EFBFBD> <20><> <20>஧<EFBFBD><E0AEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 䮭?
+// <20>/<2F> "No". ᫨ <20><>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> "Yes", 梥<> BLACK <20>ᯮ<EFBFBD>짮<EFBFBD><ECA7AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> 
+// <20><><EFBFBD><EFBFBD><EFBFBD>⢥ 䮭<>, <20>⠭<EFBFBD><E2A0AD> <20>஧<EFBFBD><E0AEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD>ন<EFBFBD><E0A6A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ⮫쪮 <20><><EFBFBD>
+// <20>ᯮ<EFBFBD>짮<EFBFBD><ECA7AE><EFBFBD><EFBFBD><EFBFBD> ncurses, <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
+;TransparentColors Yes
+
 // <20>롮<EFBFBD> 梥⮢ <20><> 㬮<>砭<EFBFBD><E7A0AD>.
 ColorSet Detect     ; <20><><EFBFBD><EFBFBD> <20><>।<EFBFBD><E0A5A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
 ;ColorSet Normal    ; <20>⠭<EFBFBD><E2A0AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 梥<>.