If you use Gimp (or Photoshop) You can do it easy.
1º- Install GIMP.
https://www.gimp.org/
2º- Find a image what you want with the background pure white or black (You can pick one from the Gallery of
GW)
3º- New Document > Copy (
Ctrl+C) Paste (
Ctrl+V) the image. That create a "Floating Selection" in that point you need right click in "layer" and click in "To New Layer"
4º- Now you need create a New Layer. (
CTRL+SHIFT+N) or click in the botton of Layer window.
5º- In the option of "Mode" from the Layer is important select
HLS Color.
6º- Now you can paint the the Empty Layer with the Brush (P) and try your new scheme of colors. CONGRATULATIONS !!!
Note: If You want, try to search a nice combination of colours with Adobe Color Wheel
CC (that is another History).
https://color.adobe.com/es/create/color-wheel/
*All the content are from
https://segmentosolar.wordpress.com/2019/01/11/prueba-esquemas-de-color-con-gimp/ and translate from spanish to english*