I just used the Mandator for the first time and saw the explosions from its missiles are different from most the others. DIFFERENT GOOD! The flash of light and bright blue cloud\explosion look fantastic! Most the concussion missiles are a rather dull red glow, not nearly as impressive. Have you considered using these awesome looking explosions, and if you want them red, perhaps use the same one just tented red?

i think the graphics are based on semi-cannon descriptions of various munitions. since capital ship missiles are not depicted in the movies, i would guess that the graphics come from descriptions in the books. just about every source agrees that there are distinctive explosions from different missile types.

I kinda figured it was related to canon, though I never really payed much attention if they describe the explosions in detail. (shrugs)

not every time, usually only once per book do they descibe a certain explosion. the x-wing series is probably the best reference for the various ship munitions.