Is it different from Marco's Cube
(other than the color scheme)?
Same idea, but a fundamentally different puzzle because of the state of the puzzle before truncation and filling. The state of the unmodded square one in the 4th picture is the state the square one used to be sold in, along with instructions on how to get it back to the solved state. That state allows for every piece to be unique, akin to the ghost cube. Marco's Cube is simply one 90 degree turn from being solved, and has non-unique pieces. The color scheme is genius BTW, I love it.