One advantage of knitting over sewing; it's possible to undo your fabric and remake it. :-)
I'm halfway tempted to try the fluorescent multicolour with the zigzag scarf pattern because it would be utterly cool if the colours pooled in zigzag fashion up the zigzag (though I have a sneaking suspicion that the entire colour repeat may be longer than the scarf's circumference which would make it not work ... but I'll still try it just to see)