ive sorted all my stuff with halfords spray... I attualy sprayed the whole of my front bumper myself... The way i found best was to waste the paint by keeping the can at a good distance... it takes longer and uses more paint but the colour match is great and use about 6 cans of spray at £11 each- but you can get them for £6 premade. Laqure can was £7 and primer was £7... so was about £70 for the full bumper spray... Ive done lots now, my boot flush, interior, all sorts using this technique! (should take a few cans of paint for scratches, even big ones)
thing is, if you try this and it doesnt work, u can get it resprayed like u were gunna and only wasted £30... BUT if it does work... you will have saved a fortune! - you cant really loose.