Add a color reference to the signs dialog

signs_lib/init.lua

@@ -465,8 +465,8 @@ signs_lib.construct_sign = function(pos, locked)
 	meta:set_string(
 		"formspec",
 		"size[6,4]"..
-		"textarea[0,0;6.5,3;text;;${text}]"..
-		"button_exit[2,3;2,1;ok;Write]"..
+		"textarea[0,-0.3;6.5,3;text;;${text}]"..
+		"button_exit[2,3.4;2,1;ok;Write]"..
 		"background[-0.5,-0.5;7,5;bg_signs_lib.jpg]")
 	meta:set_string("infotext", "")
 end