Where is that promised paint that changes colour when a voltage is applied
to it, must be at least ten years ago I read about that.

I remember during the 70s I went into one house where the whole of one wall
was tiled with mirrors, At first it made it look big, but after a while
seeing yourself all the time got onmy nerves. Still the owner seemed to
like the effect so that is what matters, I suppose.
Brian

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"Richard" wrote in message
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On 06/03/2021 21:17, JohnP wrote:
I want to have a different coloured wall when I decorate the lounge.

20 x 12 feet

window & patio on one long side
fireplace & TV on one short side
doorway to hall other long side

I feel inclined to have the contrast and slightly darker wall as the long
side facing the window.

Are there any conventions or effects that this goes against?

Good grief. It is *your* lounge, do with it what *you* want.
Just be sure to call it a wall of colour to keep it politically correct.