My thanks go to Mark Zalutko for these photos of his 1958 Thrift-T. On his Regal, Mark writes:
... I bought the Thrif-T that you have on your site now. It was red when I bought it but found out it was original yellow under the paint.
The photos that Mark mentions above can be seen in the Gallery Achives (Gallery No: 52) and on the A-Z gallery on the Tri-Wheel Motor Corp page.