Replacing one color with another

[skittrell]

New user here. 'Just bought a new house and would like to use Gimp to experiment with alternative colors for walls, crown molding, wainscoting, carpet, etc. Nothing more. Sample photo attached.

Which feature(s) do I use?

[sallyanne]

Where is the  photo?

[denzjos]

An easy way to do this is to make selections (with the selection tools) of walls, windows, doors, etc. and convert them to paths, so that the selections are preserved (Gimp menu: Select / To Path). Save your work as a Gimp .xcf file, so that your work is not lost. To color, convert the paths to selections and fill them with a color (Gimp menu: Select / Selection from Paths). Check out this site to see how they use selections to fill selections.
https://www.visualizecolor.com/ppgpaints...c69991947f