I originally wanted BRG, but the car I bought was a darker red. Needless to say, I fell slowly accustomed to the color and eventually became in favor of a dark red. Now I'm dead set on a dark red, but it needs to be darker than the traditional Triumph signal red.
I've gotten several samples from my paint and body shop, and I think I have it narrowed down.
We decided on using single stage paint, nothing metallic or fancy, because I believe these cars look best that way and it happens to be period accurate.
Samples I got was Torch Red, Porche Red, Signal Red, Mack Red and Carmine Red.
Although I liked Mack red, being darker than Signal Red, under direct sunlight it does not look considerably darker than Signal red any ore than the real life variations in what 'is' signal red.
I wanted something deeper but not Carmine. Carmine in many situations looked beautiful. In direct sunlight it's gorgeous. In shade, it was a little more brown-red and lacked a vibrant saturation that I wanted in a deep red. It was beautiful color but not the deep red I was going for.
Finally, my paint and body guy had some old paint called 'Le France' Red which he used in the past to fix up an early model AH Bugeye Sprite. If you didn't know, the first year or so they made AH Bugeye Sprites, they used a color called 'Cherry Red' that was a very deep and beautiful red. It wasn't too long later they changed their standard red color to a more bright and flashy red, similar to Signal or Firetruck red we see on many sportscars.
Anyhow, I took a sample home and it wasn't long, (maybe 24 hours) before I had fully committed to the color. It was much darker than Mack, and while only slightly lighter in tone to Carmine, it had a deeper saturation and vibrancy of red in the dark shade.