Facing colour according to the position that a particular regiment held in the order of battle - that is within a brigade, division or corps. As an example, amongst the Russian line infantry, the two brigades within each division were distinguished by red or blue shoulder straps; while the four regiments within each division wore red, blue, white or green collar patches and cap bands respectively. Facing colour A facing colour is a common tailoring technique for European military uniforms where the visible inside lining of a standard military jacket, coat or tunic is of a different colour to that of the
Colour cast Improper timing or imbalanced chemical mixtures can cause unwanted casts. Colour casts can also occur in old photographs due to fading of dyes, particularly under the action of ultra violet light. These may be correctable on a scanned version of the photograph with image editing techniques. Most digital cameras try to automatically detect and compensate colour cast and usually have a selection of manually set white balance settings to choose from. Otherwise, photo editing programs, such as Photoshop, often have built in colour correction facilities. For film, blue filters and amber filters are used to counter casts. Amber filters are