Color pallete

[C7aesa7r]

There's any tool to auto create pallets trough a color while using the pencil?

i.e i choose a blue color:

Do a line with pencil and result like this:

[c.pfaffenbichler]

I don’t think that would be default behaviour but you may be able to automate it with a Script or even an Action.

Do a line with pencil

That seems somewhat ambivalent, please clarify.