Coloring. That's what my husband calls it when I'm working in my craft room. Today his description is very accurate.
I took a vintage image (Graphics Fairy), transferred it to kraft-colored card stock with gel medium (an image transfer) then used colored pencils and distress inks to give it some color.
For me, the biggest challenge when working on kraft-colored paper is making sure I have enough value changes (lights and darks). In this case, the addition of white on some of the long grasses helped.