Following a tutorial I found on the web, I bought a Welding glass from a hardware shop and drove to my favorite 'waterfalls', the Dummugudem Irrigation project!
I secured the glass to the lens with a piece of Insulation tape and covered it with a piece of cloth to reduce light leaks.
Being the Bum that I am, I forgot to carry my Tripod and had to place the camera on rocks. I had a hard time finding good spots and managed to scratch the camera in a couple of places.
I used a shutter speed of about 30 seconds at f8 and above.
The results were very pleasing though:
I compensated for the green cast by adjusting the curves on Photoshop.
The results look best on Black and white though. Will experiment more on my upcoming trip to Marredmilli.