Legacy Custom Fx doesn't work in Jumpgate

So I have this little missile fx that is better suited for my purposes than the default missile fx in Jumpgate, but when I port it over from legacy to Jumpgate the colors don't work. No matter what I set the colors to, the missile always shows up as a washed-out barely visible little cluster of particles. Below is the fx, in case anyone can spot the problem. I've tried adding some of the new variables like rulerType and isPointToPoint but it makes no difference. Similarly tried changing both the start and end colour values. No good. {     "angle": -1,     "angleRandom": 0,     "duration": 15,     "emissionRate": 600,     "endColour": [0, 0, 0, 0],     "endColourRandom": [0, 0, 0, 0],     "lifeSpan": 20,     "lifeSpanRandom": 0,     "maxParticles": 200,     "size": 1,     "sizeRandom": 0,     "speed": 30,     "speedRandom": 1,     "startColour": [150, 90, 50, 1],     "startColourRandom": [30, 20, 0, 0] }