Test of the selected color palette?

Question

Working with color

Maybe someone knows what resources to see how the site elements will look like?
I see it this way. There are several ready-made templates to choose from with various simple elements (buttons, blocks, text). I fill in certain color fields (let there be 2-3 of them) and this whole thing paints the template.
Maybe someone has their own methods for testing color "in the field", which take a minimum of time? Please share if you don't mind