Diffuser for TN4A

Been enjoying my TN4A for a few days now, pretty amazing piece of kit.

I like the flood/hotspot mix when messing about, but 90% of the time I simply require total flood. What is my best option here? I have seen a few other brands of the "soda can" style lights have an attachment that diffuses the light, you can pop these open to get the original beam profile back. I cant seem to find a Thrunite version for the TN4A though. My other option is the sand DC-Fix, but i'm a bit worried that on turbo the light can get quite hot and the plastic film might melt or cause a problem when I want to take it off.

Does anyone have any advice or experience that might help me here?

Thanks

Kel.

White silicon cupcake molds (12 for around $5.50 on Amazon, includes shipping) and a thick rubber band or plastic zip tie.
Silicon is good for 450 deg. oven, so it should be fine for a LED light.

http://www.amazon.com/California-Kitchenware-Butterfield-Silicone-Cupcake/dp/B00HW8TIQU/ref=sr_1_1?s=home-garden&ie=UTF8&sr=1-1&keywords=silicone+molds+white