Would it be possible to swap Blue Flame Burning with Soul Fire'd?
The latter is not only visual and instead makes burning from blue fire also deal more damage, along with a couple of enchantments (toggleable) and a more consistent behavior of tracking which kind of fire an entity is burning from.

I tested it locally and it seems to be working fine without incompatibilities. However, I found out, seeing old Soul Fire'd issues, that the Soul Flame enchantment doesn't work properly with CoFH core installed. But this can either be ignored, hoping that someday compatibility will be added, or just disable the enchantment (anyway with Blue Flame Burning there are no enchantments).