This is likely my most beautiful, interesting and mysterious snowflake to date. Anyone ever see a pink snowflake before? As unbelievable as it may seem, this colour is not faked.
This is a phenomenon I have noticed recently. Some center elements of snowflakes have exhibited green/cyan and pink/magenta solid colouring. These colours are familiar in chromatic aberrations created by the lens, but are not located on the high-contrast edges that typically identify such aberrations.
These colours are only visible on certain angles. Here is the same snowflake photographed head-on: http://www.donkom.ca/gplus/DKP_1728.jpg . The changes in angle and orientation to get surface reflection bring about the colouring.
You must be (at least somewhat) doubting my sincerity on the pink snowflake. So, for those looking for further proof, here is one of the RAW files used in the focus-stacked and edited final image: http://www.donkom.ca/gplus/DKP_1773.CR2 . This image is comprised of over 30 separate photographs, focus-stacked together to increase the focus edge-to-edge. The editing further enhances details and colours, but as you'll see - the colours are not artificial.
The appearance of the colour is an odd but beautiful mystery. As I mentioned above, some snowflakes exhibit green in the center in a similar way - I'll post one soon. One example even shows both colours in an unexplainable way.