The "rose moonstone" Cathedral is on the left, while the "flesh moonstone" Cathedral is on the right. They were actually sold as different color lamps and are not just a color variation of the same lamp. The "flesh" color was listed in a 1934 advertisement that announced the new Cathedral lamps for the 1935 year. I would say that the "flesh" color was not widely received however, since the number of rose lamps found by collectors seems to far outnumber the flesh lamps. The difference in color between the two however can be so slight that it is often hard for collectors to differentiate between the two. It is much more apparent when the two lamps are placed side by side like this than it is when looking at an individual lamp. The flesh lamp often has a yellowish cast to it and is not considered to be a "pretty" lamp by most collectors, so if you're looking at a rose moonstone Cathedral that just doesn't appeal to you due to the color, it may in fact be a "flesh" moonstone lamp. Many of them are also found with color "flecks" throughout the glass giving them a slightly speckled appearance.