The stem (trunk) is firm, the petiole (between trunk and leaf) is firm on my new leaf, and it is similar coloration from front or back, but this is the first leaf since it's long dormancy. Another philo I have didn't start to show it's variegation until a leaf or 2 later. The red sheath like part collapses but not the petiole.... If the petiole on your leaves are getting kind of sponge-like then the leaves may be giving it up. Don't lose hope, spring is around the corner and as long as the stem is still firm and not rotten in the soil, it can come back. Keep us posted, and watch watering, I try really hard to keep even to barely moist when the plants arrive in shock from cold damage. Some sellers can send plants in winter and some shouldn't :).
