Hi
I have academy 1/35 M247 sgt york , and just have realized that i do not have the color schemes..Could you help me what kind of color I can use with this model.....Or what is the color code of this paints ??????

Thanks

This site has some color plates so you can try to match the colors: http://photos.kitmaker.net/showgallery.php/cat/14775

If you look closely at the picture, you'll see that the kit (a clone of Tamiya's) does not represent the rear hull at all correctly. If you want an accurate model, Eduard has a comprehensive brass conversion to correct the rear hull, as well as excellent detail parts for the turret.
AFV Club also has some nice tracks.

I will do extra search on it,

but it seems like I will choose earth yellow (or tamiya khaki) for yellow part, and lightt green or nato green for green part...

Your photo looks like the old Winter US/Europe MERDEC scheme - that was:
Forest Green (FS 34079)
Field Drab (FS 30118)
Sand (FS 30277)
Black (FS 37038)
this site has all of the MERDEC options listed
http://www.panzerbaer.de/colours/us_camo_merdc_1.htm