On Wed, 09 Jan 2008 18:49:23 GMT, Mike Scott
wrote:

Shame about the dimmers in other rooms
though: are there dimmable low-power lights around?

Sort of, but as you dim them the colour rendering, which isn't
particularly good to begin with, gets badly skewed and the resulting
output tends to be shifted towards the blue end of the spectrum
creating exactly the opposite effect to the one you want.