Is my Bonsai tree comatose? I have a Hokidachi bonsai tree, The leafs have gone orangy,green and...

I have a Hokidachi bonsai tree, The leafs have gone orangy,green and are curling up. I brought it roughly 6 months ago, but think I may have over watered it. What should I do, and is it limp?
Lawn sprinkler problems?
Answers:    That type of discolouration can mean your plant is very down from sitting with its feet surrounded by water all daytime. Flexibility means there's hope. Give it a thorough soaking to rinse any nasties out of the soil and let the plant drain VERY all right afterwards. Refer to this site by an artist/grower for care instructions.

http://www.american-bonsai.com
I be given some (x10) Acer japonicum seed.?
Time to buy a new one.