Sorry RyuSensei you're actually dead wrong about this, and you should check your memory a little better. Chapter 419's page 1, is the very first time the Demon Realm Pain's head spikes have been colored white, or left white, if Kishimoto, or one of his staff members made a mistake, and forgot to color the spikes black. Also, If you take a careful look at the the 1st panel on chapter 419's page 1, you'll see that the black spikes are there. For further proof, I will leave 2 or 3 links, that show that his spikes were always black before chapter 419.
http://www.onemanga.com/Naruto/379/10/ This panel is a link to the panel where we see the Demon Realm Pain for the first time. This is right before he tairs Jiraiya's arm off.
http://www.onemanga.com/Naruto/379/14-15 This one is a link to chapter 379's doublespread, notice the Demon Realm Pain has black spikes in this image just like the first panel I gave you a link for. Well the first one should be proof enough for you, but here the cover for chapter 380, and you'll see he has, yes, black spikes, not white.
http://www.onemanga.com/Naruto/380/01. I'll admit you got 1 thing right, and that was your statement that Orochimaru was right. In Orochimaru's response to me, he clearly states, that he is used to seeing them black just like I am. He links chapter 419's page 1, to show us why he thinks it's weird, and that is because the Demon Realm Pain has white spikes, instead of black spikes for the very first time. My last link will go to page 18 in chapter 420, and you'll see that Demon Realm Pain's spikes are suddenly black again. After you see this, you should agree with me, that Kishimoto, or one of his staff members, just simply forgot to make Pain's head spikes black on that first page of chapter 419.
http://www.onemanga.com/Naruto/420/18/ So there you go RyuSensei, the final proof that proves myself right.
