Derwent Inktense pencils (ink that is permanent color ). Use the dry pencils to color/shade the design. Then brush on aloe vera gel using a very short, small, stiff brush. The gel activates the color, so it goes into the fabric but prevents bleeding.
Coloring with pencils on quilted fabric -- explains painting colors with water (bleeds beyond lines on fabric) & fabric medium (sets color only in spot you wet.&no need to heat set w/liquitex or versatex)