--- config.def.h
+++ config.def.h
@@ -14,6 +15,13 @@ static const char *colors[SchemeLast][2] = {
 	[SchemeSel] = { "#eeeeee", "#005577" },
 	[SchemeOut] = { "#000000", "#00ffff" },
 };
+
+static const unsigned int alphas[SchemeLast][2] = {
+	[SchemeNorm] = { OPAQUE, alpha },
+	[SchemeSel] = { OPAQUE, alpha },
+	[SchemeOut] = { OPAQUE, alpha },
+};
+
 /* -l option; if nonzero, dmenu uses vertical list with given number of lines */
 static unsigned int lines      = 0;