A dark green-ey yellow colour, obtained from mixing yellow ochre and raw umber. It is also a condiment used to spice up cooked ham and beef. When something ‘cuts the mustard’ it means it’s just right, it is the perfect thing–the right amount, in the perfect place.
In furnishings, especially towards the yellower side of mustard, it’s a very good colour to use alongside Old Masters, where the paint colours are dark and tapestries, especially those with blues and turquoises as the main colouring.