-our $white = SDL::Color->new( 0xff, 0xff, 0xff );
-our $red = SDL::Color->new( 0xff, 0x00, 0x00 );
-our $black = SDL::Color->new( 0x00, 0x00, 0x00 );
+our $mouse_color = SDL::Color->new( 0x00, 0x00, 0x80 );
+our $path_color = SDL::Color->new( 0xff, 0xff, 0x80 );
+our $black = SDL::Color->new( 0x00, 0x00, 0x00 );