gendernic/blender_nif_scripts — comment on commit bfa7303872529f227d0f635f993034c2b308c149
File:  line 0
By neomonkeus:

You seem to have created this branch from master and not my development branch. Vertex color import is already working with the alpha feature list. You seem to be going down the same route I went down, on my second iteration using setattrib. Using int() was not really required in the previous scripts and wont work at all with the new api as it store float values.
Here is the stuff related to your commit using the seperate color & alpha layer - https://github.com/neomonkeus/blender_nif_scripts/blob/development/scripts/addons/io_scene_nif/import_nif.py#L2175