One of my Prepodesma orpenii is flowering now also. I really like the gray leaf color of your plant however. The leaves on my plant are much greener, but the overall plant is nice and compact so I don't believe the color difference is due to light. Your plant probably just has better, or different, genes. ;)
This is a plant I bought. I raised some from seed which are darker. With a lot of Conophytums there are differences between collections so important to get the right one see 27/11/14.