Alternaria

To me they sure look similar to alternaria images, which often have neat color variations similar to your photos. 

This link showing alternaria alternata (1 of 50 known alternaria) shows a close up of the swoolen sections. It says to "Note: transverse and longitudinal septations."- http://thunderhouse4-yuri.blogspot.com/2010/06/alternaria-alternata.html. Seen any of these septations Clew?

Interesting that they could thrive within packing tape. Do you think that they used dead hair for an energy source? This would not surprise me, and it doesn't surprise me that they grew with next to no oxygen and light.