I may be wrong, but it is always difficult to get accurate colour when shooting against strong backlight without aids.
I have taken some pics of this bird at Bishan Park (still prefer the old name) with the same camera, most of the time after sunset. I am not surprised by the colours of your pic.
Based on what I can find out, khock520's pic was shot at 8.35 am, by which time the light was already quite good (sunrise time on 26 Aug was 7.02am). The background was also less of a challenge. I found that FZ200 on auto white balance would often give a bluish tint on pics shot after sunset. His pic shows tint of blue overall which is likely due to photoshop to enhance the colour of the bird, rather than problem of auto white balance.
I hope khock520 can join in the discussion.
Edit: More pics of little heron for comparison of colours:
http://orientalbirdimages.org/search.php?keyword=little+heron