Ombre
Ombre is when a colour graduates from light to dark, using all the tones of colour in the spectrum. The name comes from the classical Latin umbrare, meaning to shade or overshadow. Chiaroscuro shading is artist’s technique achieved by cross-hatching or shading and is very popular in haute couture. For an example, see John Galliano’s Rene Gruau Dior Couture collection from January 2011.
Overcasting
Overcasting refers not to the weather, but to a method of casting off. This often slanted needlework stitch that is usually done by hand and is worked over another stitch to outline a design motif. The act of overcasting can also be to stitch over raw edges to prevent work from unravelling.