easy id say, i do bodywork and you can get decent paint from halfords. go into there with your paint code and get a spray can of it made up.
You'll need from a motorfactors or body
shop:
some high grade sand paper 240 grade
masking tape
brown masking paper or lots of newspaper
white spirit
plastic primer (white)
tack cloth
wetflatting paper (wet or dry its called) 240 or 600 grade
stockingette
and of course the paint
rub them down on or off the car (off will need no masking tape or paper) off preferably as then you wont worry about getting it on the car, with high grade sand paper
wipe them down with the white spirit to clean them on the stockingette(wait until it evaporates)
then spray some plastic primer on ( nice thin even coats, wait until dry before adding additional coats)
get some water and lightly sand the primer with the wet flatting paper, only until they are smooth, making sure there is still primer on the strips
dry them off
using a little white spirit on stockingette try a small area to see if the white spirit takes off the primer(it shouldnt) if it doesnt then wipe the strips. If not then dont worry.
Once clean and dry, rub over the strips with the tack cloth then paint. Again thin even coats.
Leave to cure for about 3 hours then fit
If you didnt already know lol!!!