I have used the grey and brown pencils for the handles and knobs but the brushes I have used each of the other coloured pencils. They very lightly water coloured them pulling the colour out of the brush. This is stamped and coloured on the Stampin'Up whisper white card so you can't use much water. Take care, otherwise it makes the card going furry!
For the plant pot I have stamped on some old Dsp then fussy cut. It could have been done on a patterned piece but I wanted to concentrate the colour on the brushes. So all the rest is very neutral.