Your question makes no sense. Please can you rephrase it and explain exactly what you wish to know?
Horse chestnut.
A green horse is simply an untrained horse.
A horse chestnut is a deciduous tree. You can get more information about the horse chestnut at the Wikipedia. Once on the page, type "Horse chestnut" into the search field at the top of the page and press enter to bring up the information.
A 'green horse' does not mean the horse is literally green, it means that the horse has minimal training, is still young, and has much to learn. However if you see a horse that is literally coloured green, then there is obviously something wrong with that horse!
you overtake the horse on the inside
Not nessicarily. A green horse can be a young horse or it can be older. "Green" means little or no training, but you can always teach an old horse new tricks. Happy Trails.=)
If you decide that all horses are green, and then you try to find a green horse you are expressing, deductive reasoning. You know that horse are green, so you know that you can find a green horse.
who hid inside the wooden horse
Green is a color. This come from putting green ribbon on rookie horse to show that the horse was jumpy.
a horse that can be hard to handle or a green horse
The green sea horse lives in the 'Green Seaweed Cluster'under the 'Ornamental' category. Do not get it confused with 'Green Straight Seaweed'.
Another paint horse.