what i mean by this is the ability to paint individual faces on bricks. for example, it would work like this:
(this is just a picture, not actually working like this)

of course you would need a / command to toggle this, because painting models that have lots of faces would be very difficult.
to avoid the above scenario of having to implement the / command, the coder could make it so just the regular NxNxN bricks can be painted like this: so only the regular
5x5x3
BRICK
could be painted with this feature
this would be extremely useful for not having to double up on walls for interiors.
to be able to save this, the coder should add an option under the save menu and load menu for Save Complex Paint and Load Complex Paint.
the complex paint mod should also be server sided so that it can only be loaded on servers with the complex paint mod installed.