After tweaking a bit I was able to get it to work, the issue was the threshhold, once I put on the right color it did the trick. Although now I have an issue: I would like to get a more contour like result instead of such a glow effect (as show in the screen). I’ve tweaked everything but with no luck, the radius keep too big (look at the triangle). I wanted it to be more concise than that.
Actually I solved on my own. I totally forgot that I had the original Bloom script with UnityPro. Took a look at the code, edited the sampling and my life is complete.