i hope i understand what you mean.
[EmitterType001]
Name=BoomDebrisEmitter
EffectLevel=3
EmissionType=RADIAL_EMITTER
UpdateType=NON_MOVING
LifeTime=0.50000
MaxVisibleDistance=8000.000000
PositiveZOnly=TRUE
EmissionRate=0.01
EmissionVolume=0.000000,0.000000,0.00000
EmissionVelocityTableType=CONSTANT
EmissionVelocity=0.000000,0.000000,12000.000000
EmissionVelocityDeviation=0.0000
RadialVelocityTableType=CONSTANT
RadialVelocity=5000000.0
RadialVelocityDeviation=0.5
ParticleUpdateType=SIMPLE_POINT
ParticleRenderType=SPRITE
ParticleRandomOrientation=TRUE
ParticleLifeTime=7.000000
ParticleLifeTimeDeviation=1.0000
ParticleWeight=10.00000
ParticleRandomness=0.050000
ParticleDragFactor=0.400000
ParticleInheritence=0.0010000
ParticleColorTableType=TABLE
ParticleColor[01].Time=0.000000
ParticleColor[01].Value=0.900000,0.800000,0.700000,0.0000000-------------------------here you can set color of explossion emiter
ParticleColor[02].Time=0.200000
ParticleColor[02].Value=0.50000,0.40000,0.30000,1.00000
ParticleColor[03].Time=1.000000
ParticleColor[03].Value=0.200000,0.150000,0.100000,0.000000
ParticleSizeTableType=LINEAR
ParticleSizeStart=3.00
ParticleSizeEnd=3.00
BaseSizeDeviation=0.5
TextureMaterial=BoomDebrisMaterial