I did some research. Firemist seems to be a very vague term as I found all kinds of firemist paints on the internet through Google. Mercedes has a "Firemist Red Metallic" 2004 code 548. GM has many, many firemist colors depending on which year you are talking about it could be anything. For instance, I found Spectre Blue Firemist, Monterey Green Firemist, Rosewood Firemist, Madeira Plum Firemist, Topaz Gold Firemist, Saffron Firemist... the list goes on and on. I found a listing for a cinnamon firemist and thought maybe you were referring to that so I searched it and found that it looks like a firemist pearl mixed with some shade of orange, like you mentioned. You can search it yourself on Google "Cinnamon Firemist Paint" to see codes. The following are 1970 Cadillac Eldorado GM paint codes:
<u>Code</u>
90 --- Spartacus Blue Firemist
93 --- Lucerne Aqua Firemist
94 --- Regency Bronze Firemist
<font color="red"> 95 --- Cinnamon Firemist </font>
96 --- Nottingham Green Firemist
97 --- Briarwood Firemist
99 --- Chateau Mauve Firemist
All of these GM codes should be easy to code out with HOK, PPG, or any other paint line. Good luck, hope this helps.