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>Arriccio or Brown Coat – a layer of plaster over
>the scratch coat (trullisatio) and just under
>the finish coat of plaster (intonaco) which will
>be painted. The sinopia (full-scale composition)
>is created on the arriccio.
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If I understand this correctly, this is the layer where the "cartoon" is applied and done in an underpainting/grisaille technique? If this is before the finish coat, then the arriccio underpainting shows through the the finish coat, where the colors are actually applied...

Am I understanding this correctly?

Sarah