Doin'Time (Promo)

This is a realy cool promo, it has only 3 tracks and is on Mca records. on thing about this cd is that it has no cover(never availible with one) and has a white spine case, one thing tho, ive seen some auctions with black spine caseing and white, so not sure which is the original color, but as far as i can tell white was the color of choice, as the Doin'Time EP also has a white spine! so if anyone knows for sure which is right let me know, Much Peace!