In Colourbox after you have clicked "PLAY" you will find various shapes waiting for you to puzzle out from top to bottom:
Now simply choose the shape and puzzle you would like to try.
Drag outside the shape to rotate it onscreen to see the other side.
Click a coloured icon.
The pair you have to connect will go light, unless the other one is round the back.
Drag from one icon to colour the grey tiles.
Connect all these pairs of icons with tiles of the same colour.
Icons turn and stay white when a connection is made on the surface of the shape.
Complete each shape by connecting all pairs of icons with colour!
Watch out .. sometimes you will block yourself in!