doc/ex/implode.rb in rmagick-1.15.7 vs doc/ex/implode.rb in rmagick-1.15.8

@@ -13,16 +13,18 @@
 
 implosion = 0.25
 8.times {
     frames << img.implode(implosion)
     legend.annotate(frames, 0,0,10,20, sprintf("% 4.2f", implosion))
+    frames.matte = false
     implosion -= 0.10
     }
 
 7.times {
     implosion += 0.10
     frames << img.implode(implosion)
     legend.annotate(frames, 0,0,10,20, sprintf("% 4.2f", implosion))
+    frames.matte = false
     }
 
 frames.delay = 10
 frames.iterations = 0
 puts "Producing animation..."