The Hi Spot 50 coloured spotlight is excellent for accent or mood lighting, they have very high quality light output which does not fade with age.
The colour will not peel as it is internal and part of the reflector unlike cheaper lamps that have the colour painted on the front.
These are a high quality product far superior to coated lamps
They are mains voltage (240 volt) and do not need a transformer
The GU10 base light bulb is very common in both commercial and domestic situations. These lamps will go straight in any light fitting designed for the non coloured GU10 spotlight (otherwise known as twist and lock) as they are exactly the same size and shape