I would bet good money that the answer is 'No'. That would be adding a completely new visual effect, rather than customizing an existing one.
Of course, none of us here on the boards know.
Paragon City Search And Rescue
The Mentor Project
Just wondering if anyone has knows if we will be able to add color effects to Invinciblity Taunt Aura. Just having a color pulse along the floor showing the range of the aura would go a long way in improving the playability of the INV set.