This is a combination stain, so first remove the oily/waxy portion of the stain, then remove the dye portion.
Follow these steps if there are a limited number of spots to remove.
Step 1. Spray or sponge* with a dry-cleaning solvent (example: Energine) or treat with a stain stick. Then rub with heavy-duty liquid detergent and scrub in hot water.
Step 2. Soak in an all-fabric bleach (examples: Biz, Clorox 2, Snowy Bleach, Vivid) diluted according to package directions. Use liquid chlorine bleach for tough dye stains on fabrics that are colorfast to bleach. Wash in as hot of water allowable for fabric using detergent.
*"Sponging" confines the stain to a small area and keeps it from spreading. To do this, use absorbent material, such as clean rags or white paper towels, and a dry-cleaning solvent, spot remover, or aerosol pretreatment spray. Follow these steps: Pad the working surface with clean rags or paper towels that can absorb stains. Place the stained area or spot on the fabric face down over the padded surface. Dampen a small white cloth with solvent. Use the dampened cloth to pat the stain from the wrong side of the fabric. Feather the edges of the stain, working from the outside toward the center to keep the stained area from getting larger. As the stain transfers to the absorbent material beneath the fabric, move the stain to a clean place on the absorbent material so the stain has a clean place on which to transfer. Repeat this procedure until all traces of stain are gone. Launder to remove any ring that might be left by the solvent.
If most of the clothing in the washer is spotted with crayon, follow these steps: put 1 cup baking soda, 1 cup water conditioner (examples: Spring Rain, Rain Drops, Calgon), and liquid detergent for a load in your washer. Fill washer with the warmest/hottest water allowable for the fabric and let it agitate 2 minutes to dissolve the cleaning agents. Add clothing. Shut off the washer and let the clothing soak for 30 minutes. Then turn the washer on and finish the wash cycle. Check the clothing. Repeat process if spots are not totally removed.