Gamma Ray effect colour?

[Ultimo]

So, I made a character, a Blaster with Energy Blast and Atomic Manipulation (he's based on Silver Surfer).  The powers are all coloured with very light blue and gold, making them almost white with a bit of blue and gold tinting and Kirby Dots.

 

The problem is with Atomic Manipulation.  I slap Electron Shackles on an enemy, then Positron Cell, and it creates this effect where the words Gamma Ray pops up with a puff of GREEN schmutz (supposedly radiation, I assume).  The problem is the puff is green!  The powers are blue and gold, why is the puff green?  Is there some way to recolour that?