I finished a painting with a green wall but the longer i look at it there is a spot that the value is off. I decided to mix a new paint to retouch it. I was proud of myself that the retouch paint match perfectly. it was seamless. BUT after a week, the retouch paint area turn darker. Now, I'm afraid to do anything.
Question: How to retouch a painting?
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Comments
Does it matter? Value variations add interest.
Premix sufficient paint and redo the whole wall.
Select stable pigments that don’t shift when dry. Are you using student grade paint?
Is the new patch more matte than the shine of the old paint? Gloss can affect value.
For the sake of understanding. If I mix the new paint to match the old paint seamlessly implies there are two identical pigment content. If it shift should they shift the same. I use Geneva paint.
It is not the gloss. I look at it at different angle and block any glare.
The problem is, when oil paint dries, all the oil sunks by the surface of the canvas and the color loses contrast. To bring the original color back, you must oil in the surface and then start making changes with your next layer.