I beleive monokote is a heat-shrinking vinyl. I'm pretty sure, but could be wrong. Vinyl sticky sheets are extremely inexpensive though, so your on the right track! Some colors may fade in the sun (I know certain red and yellow vinyl does).
But MINI charges $80 for $3 of vinyl... huummmmmm...
Check your local sign/automotive graphics place. A set of stripes for $15...? Give 'em some measurements and a few minutes later your set. Might be able to use water to apply (consult vinyl dealer: water would help you move for correct placement) squeegy out and its on there till you peel it off.