ext/RMagick/rmstruct.c in rmagick-3.2.0 vs ext/RMagick/rmstruct.c in rmagick-4.0.0

@@ -359,16 +359,16 @@
 
     Export_ColorInfo(&ci, self);
 
     sprintf(buff, "name=%s, compliance=%s, "
 #if (MAGICKCORE_QUANTUM_DEPTH  == 32 || MAGICKCORE_QUANTUM_DEPTH  == 64) && defined(HAVE_TYPE_LONG_DOUBLE)
-                  "color.red=%Lg, color.green=%Lg, color.blue=%Lg, color.opacity=%Lg ",
+                  "color.red=%Lg, color.green=%Lg, color.blue=%Lg, color.alpha=%Lg ",
 #else
-                  "color.red=%g, color.green=%g, color.blue=%g, color.opacity=%g ",
+                  "color.red=%g, color.green=%g, color.blue=%g, color.alpha=%g ",
 #endif
                   ci.name,
                   ComplianceType_name(&ci.compliance),
-                  ci.color.red, ci.color.green, ci.color.blue, ci.color.opacity);
+                  ci.color.red, ci.color.green, ci.color.blue, QuantumRange - ci.color.opacity);
 
     destroy_ColorInfo(&ci);
     return rb_str_new2(buff);
 }