// Make the particles glow
integer interpColor = 1; // Go from start to end color
... // End alpha (transparency) value (if interpColor = TRUE)
vector startColor = <0,0,1>; ... ; // End color of particles <R,G,B> (if interpColor = TRUE)
vector startSize = <1,1,0>; ... = flags | PSYS_PART_BOUNCE_MASK;
if (interpColor == 1) flags = flags | PSYS_PART_INTERP_COLOR_