Well, I have some LUA experiance from Garry's mod. I'll try to cook something up. I'm not sure if I can though, sorta rusty :/
-TinyWolfie<3
function sprkcolour()
tpt.set_property("dcolour", 0xFF0000FF, I)
end
tpt.element_func(sprkcolour, tpt.el.sprk, false, sprkcolour)
tpt.set_property("dcolour", 0xFF0000FF, "sprk");