You can go and spend some cash in a reclamation yard (or website) and find some cool ands original industrial light fittings. If you have the money, you should do just that if you are going for that 'look' in your home. But if money is a little tight, good old Ikea has these Foto pendant lights.
The lights are available in two sizes and four colours, although one of those colours is the natural metal, so we're not sure if that counts. The two coloured finishes (acrylic on an aluminium shade) certainly work the best for us, both of which would work well in an industrial or midcentury setting.
As for prices, the coloured versions are just £12, with a larger shade available for £18.