The windscreen receives a dark purple 'bubble' surrounding it.

Spanky attacks by throwing a small purple bubble.

If a purple bubble is bounced on Spanky's head, it turns green.

The purple bubble uses a chemical called crystal violet lactone.

McNab blew an impressive purple bubble, snapped it.

Amused, she blew a purple bubble with the gum he'd passed to her.

Trina blew an enormous purple bubble, snapped the gum back.

The only apparent effect was that it caused purple bubbles to creep over the sides of the beaker and drip onto the floor.

It had finally stopped dribbling but there was still a dark purple bubble there which looked more than ready to break open at the slightest urging.

Just a few hours ago, an eight-foot-long shark ducked beneath the bow in a fizz of purple bubbles.