Script support for AColors. All colors in script related code are now AColor.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@852 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gfx/color.hpp

@@ -35,6 +35,9 @@ Color parse_color(const String& value);
 /// Parse a color with alpha
 AColor parse_acolor(const String& value);
 
+/// Convert an AColor to a string
+String format_acolor(AColor col);
+
 // ----------------------------------------------------------------------------- : Color utility functions
 
 inline int bot(int x) { return max(0,   x); } ///< bottom range check for color values