OjO: there are USA Originals and USA Reissues of this 1966 release in both Stereo and Mono. And although the jackets of both versions look identical, the difference is clearly visible on the records center label. The OG has 2 orange color variation of dark and lighter orange. NO YELLOW. ALL USA Reissues will have 2 different colors: Yellow and Orange. And no, the original Orange label colors WILL NEVER change to orange and yellow after time. So before you purchase from any seller, ask them what center label colors they have on their copy? And if it's Still Sealed, A Ya Tu.