Thanks a lot @farm-mom
Pictures are a good idea :-) , but there is always a lot of work in the end to retouch and get what we want. :-(
It is with photos that I find new colors for objects.
To use both pictures and new colors: a little more work.
When you have finished with the menu brush colors, download the painting yu have made.
Then upload our pallet, clone the color in the brush, and upload again the painting you were making.
The color is still in the brush, so use it.
The problem is if you want to use a different color, you have to repeat the first step to clone another color from the Palette, and so on.
I hope this helps . :-)
Cheers