remember those t-shirts that changed colour when they got hot?
maybe Lego could make bricks like that
( Grrrmachine the indifference engine, Thu 3 Mar 2016, 11:26, archived)

So it's one colour whilst you're holding it, but another once you've finished building?
Sounds stupid.
( monster munch person, man, woman... camera... TV?, Thu 3 Mar 2016, 11:28, archived)