halos come in two colours: chrome (looks a bit naff on MOST cars) and black (looks awesome on light coloured cars and anything really)
morretes are nice on some cars, i suppose it depends on what you do with the indicators.
the black halos are very classy and are worth the £200. ive never seen morettes in real life but apparantly they are quality. i *think* they come black and people colour code them to their choice.
Try Essex racing for halo's...they do single ring or twin ring for the punto i think...normally £200 max (can't remember the exact price).
I agree with vtec about morettes making the indicator look crap.
You could always go for bullets...but I am not 100% sure they are legal.