Buying a force or relax for one joint eg right knee Marine...left knee aqua? Making this could allow further customization and if for example you don't have enough money for a neptune force you could just buy a few neptune joints because they would obviously be cheaper then a full force/relax.. (This wouldn't replace full force's and relax's) so it would be a helpful feature for bigginers to atleaset have half there body gaia or marine..

That's what joint textures are for..

Joint textures are for mapping an image onto the chosen joint texture you bought. Which is different from what I explained... (Saying this knowing that you meant buying a joint texture then colouring it ecto/void/marine)

You can slap a solid color onto any texture.

So you can use joint textures to give you void force/pure force/etc.

With that being said, you explained for each individual joints, which joint textures can do.

And while joint textures are expensive, I doubt they will add so many individual options like that to the shop. It would become to cluttered.

But joint textures are over priced

Not really, considering you can get every joint on the market when you buy joint textures.

I think joint textures acts in different way than forces/laxes, correct me if I wrong. And yes sometimes force/lax for single joint are preffered than joint textures. In additional to change
force of lax of single all that needed to do is changing digits in item.dat (FORCOL/RELCOL)
that requires less bandwith than downloading of texture joint image from toribash into the customs folder. But if u come to this from idea to get more cheap options for begginers im not sure that it will interesting the Nabi. Instead of this I would suggest
to add option to texture joints to be switchable in to the force, relax or force/relax mode. Also only for 512res joint textures to prevent market ruin.
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I like this Idea and each joint can cost a certain amount that if all added together, would equal the amount for 1 force/relax of a certain type, But how would this be laid out on the shop?

Joint textures depend on the force/relax, and for textures. For instance, if you have the default force, joint textures aren't getting you ecto. It'll be an orangish ecto that's ugly.
I think it's a good idea, for it would fully customize your tori.
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Joint textures... ^^ like this man said above me -_-