It should be an interesting color combination. My 68 was originally Ash Gold exterior with an Ivy Gold interior. The interior & exterior matched almost perfectly. The Seafrost Green exterior may look a little funky next to the Ivy Gold, but it will certainly be less funky on a hardtop vs. a convertible. FYI, all reproduction Ivy Gold interior pieces do not really match the original Ivy Gold color. I finally gave up and went with a black houndstooth interior.