Swissmodel structures including ':' cannot be retrieved and shown on Windows

Swissmodel structures have IDs including UNIPROT_NAME:start-end. The 3d-beacons client in Jalview needs to escape the ':' in these structures when saving and manipulating them as files.

e.g.
Error retrieving PDB id Q43517_48-144:4zhp.1.A: Illegal char <:> at index 49: C:\Users\jalview\AppData\Local\Temp\Q43517_48-144:4zhp.1.A3801442885020601379.pdb
E