There is a surprising number of them, or maybe it's just I notice them more. In fact, there's even a guy who plays at my club who also has a Pyre army. But he paid someone to paint it for him, so at least I have that.
White undercoat.Blood Red. (rough basecoat)
70:30 Blazing Orange: Blood Red. (smooth basecoat - avoid recesses if possible)
Blazing Orange.
50:50 Blazing:Fiery.
Fiery.
Final highlights of 60:30:10 Bad Moon Yellow: Fiery Orange: Skull White
Are you referring to the fact there are no squad markings? If so you're right - I tell my squads apart by their weapons. One has scopes on their bolters, one doesn't, and the third squad have ccw. Special weapons and champions are an exception to this rule, so I can mix and match them between squads depending on what I feel like fielding.
It is blood red in most cases, which is significantly darker than the brightest parts of the armour which are fiery orange. As you say, could be the picture.