Just these three

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Primary red-blue-yellow plus white gouache on my sprayed tin palette and finding out what colours I can blend.Putting them in the sketchbook – I was trying to reduce my plain air kit to bare minimum. We will see what happens.

Testing

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Yellow – Cyan – Red – White gouache. Old tin pencil box sprayed white.
10 mins later – surface is good for mixing paint – I can incorporate this mixing area and lid into my pochade box.