The entire grid of the playing field in Color Fill 3D must be painted over and this can only be done using a colored cube. Its color will determine the fill color. Move the cube from wall to wall, it will only stop when it hits an obstacle. In this case, you can paint both stripes and entire areas at the same time. But keep in mind that the block cannot stop halfway, so try not to leave unpainted areas that will then be impossible to return to. It is permissible to move a block along an already painted surface in Color Fill 3D.
