Don't waste your coin mate, they will show up just like your first DIY effort !!!
Do what I did, one LED bulb (I used white, other colours are available lol) in the origanal holder and put a small 2mm x 2mm peice of electrical tape on top of the LED like I did, it reduces the focal effect !!!
Better still, for £1 i'll send you a WIDE angle LED bulb that spreads the light not focalise it like normal ones do as they have a lense on the end !!!