Is part of the description of 'Pale Puma' that its' leaves are much shorter than regular T. pallida? This does not look like a pale version of T. pallida to me, but I've never investigated what the alleged cultivar 'Pale Puma' is supposed to look like. None of the 4 pics in the 'Pale Puma' entry at the moment look like versions of T. pallida to me.
When the discussion about the difference between regular species T. pallida vs. alleged cultivars 'Purpurea' and 'Purple Heart' was had, nobody ever did offer a comparison showing how they are different from the regular species. If the cultivars are given names indicating they are more purple than the regular species, 'Pale Puma' might be the plain species, and not a cultivar at all. Without the benefit of any example of the non-cultivar, regular species, I maintain that the cultivar names are just common names punctuated incorrectly.