The new piston element is very useful. althrough the purple bit that pushes the frame is not easy to colour pemantly. Using the decor on the purple part will reset its colour each time you retract it. Ive been having to put bizr on the underneath of the puple part to keep it the right colour wich isnt that relyabe. So, it would be more easy to have it so the purple will stay the colour it was set in the first place with the decor edit.
I think it should subtract a little.