Political colour most commonly associated with liberalism. It is the official colour of the Alliance of Liberals and Democrats for Europe (ALDE), as well as being the colour of liberal parties in Germany, Romania, Estonia and the United Kingdom (the Liberal Democrats). Yellow or gold, usually together with blue or purple, is also often used to represent right-libertarianism and classical liberalism. Notable national political colour schemes include: Political colour Political colours are colours used to represent a political party, either officially or unofficially. Parties in different countries with similar ideologies sometimes use similar colours. For example, the colour red symbolises left-wing ideologies
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