Half a croissant, on a plate, with a sign in front of it saying '50c'
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Photo- and Thermochromic Acrylic Paints

Paintings change color with temperature and lighting conditions
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Since these acrylic paints include both thermochromic and photochromic pigments, the colors shift with changes in lighting and temperature. A painting could appear bright and warm on a cloudy, cool day, and bluish-cool on a hot, bright day. It might be most effective to mix the variable pigments with regular ones so that the color shifts are gentle and subtle. Take an artist some time to figure out how to use these effectively, I bet.
Dog Ed, Jun 28 2001

Try these guys for materials. http://www.colorchange.com.tw/
They also do scratch-and-sniff... [angel, Jun 28 2001, last modified Oct 04 2004]

Thermochromic nail lacquer http://www.bpmlegal.com/5997849.html
Patent No. 5,997,849 [angel, Jun 28 2001, last modified Oct 04 2004]

Techie stuff here. http://www.interact...rs.com/Products.htm
[angel, Jun 28 2001, last modified Oct 04 2004]

Dream Garden, by Maxfield Parrish http://www.ushistor...our/tour_curtis.htm
[angel, Jun 28 2001, last modified Oct 04 2004]

Peter Dickinson http://www.sdc.org....features/ja00f1.pdf
If this idea isn't fully baked then this guy's got it in a pan and headed for the oven. I'm eager to see a few color-changing paintings using many layers of clear glaze with color-changing pigments added. [Dog Ed, Jun 28 2001, last modified Oct 04 2004]

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       I'm not sure that you could specify the colour changes under given circumstances, but I like this. Lots of links on using the pigments individually, but not together, and not for purely artistic purposes.
angel, Jun 28 2001
  

       They go grey, like all cats, especially uncertain cats.
angel, Jun 28 2001
  

       There's a glass-and-gold mural in Philadelphia that's said to change very effectively as the light changes - Dream Garden, designed by Maxfield Parrish, made by Tiffany. (IIRC.)
hello_c, Jun 28 2001
  

       Nice. I want this in a good exterior one-coat.
The Military, Jul 02 2001
  

       It's okay, DeGroof, up until I actually READ the idea that's what I thought.
AfroAssault, Jul 03 2001
  
      
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