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Thank you!
I will try and so too.
It turns out that after preliminary heating and cooling picturesque layer of the thermal imaging camera sees IR radiation of different colors having different temperature from the uniform heating of the cooling with different intensity. Moreover, simultaneously.
On prolonged heating paint layer IR film sees the process of reflection (radiation) wave infrared spectrum of colors in time (30 minutes) as a single frame...
Please tell the temperature. To what degree "heat"? Because the invisible infrared spectrum is still warm.
Thank You again for your help!

P. S. "Experiments" put on foolish "bargain". Good - shore...