If you want a gold chao, you have to be the charater Tails. Go to the toy store in Central Park. There will be a gold egg in the window. If you pick it up you will be locked in so to the right of the toy store there is a huge building. When you are at the gate turn left. Then there is a grey rock that looks like an egg. Pick it up and go into the toy store. Drop the grey egg and pick up the Gold egg. Then drop the gold egg and then put the grey egg onto the stand. take your gold egg into the Chao garden and wait for it to hatch. Once hatched, you will have a gold Chao.