I was doing a bit of looking today. We all know the Ewe't was painted in a product called Firemist. It was a GM metallic used on Cadillac and later Corvette in the 1960's. The Ewe't was painted in Firemist Silver which was called Firemist Blue earlier in the 1960's. Fender used it on a guitar in the 1960's too.

I had a look at HT archival material and there were three HT's painted in Firemist colours too:

Dandenong Brougham online pilot painted in Firemist Maroon
Dandenong Premier sedan for the 1969 Director's showing, it was a restricted production car. Painted in Firemist Blue. This was a 253 auto car built it in late April 1969.
Elizabeth Premier sedan, Sales Promotion (brochure) car, in Firemist Black. It was a 307 manual car with 3.36 Salisbury LSD.

I asked Leo today and he ordered all that Firemist paint from GM.