Very fun!
It's a pretty nice unique take on the "combining blocks to form a shape" puzzle, in that only like colors combine. Honestly, I could see this idea of how things attach be expanded on a lot. Maybe you could have some things that allows you to change a blocks texture (like the lasers) so you can make your overall structure larger.
But you could also do the inverse of this, maybe some levels would have random objects in the foreground, that at first just look like decoration. But, if you move your structure behind them, it suddenly makes a line over the structure, effectively breaking them apart into 2 pieces (or more).
Could be a very cool idea..
You introduce mechanics well, without any text explanation and just a simple puzzle to show how things work, which I think is good puzzle design.
Intro sequence was cool, nice referring back to the title.
Visuals are also nice and clean.
Good job!