Colour can give you a lot of information about the history of the whisky you’re tasting. The colour spectrum ranges from pale straw to dark golden amber. A Single Malt matured in bourbon casks, for example, is very pale, while the colour is usually darker if your whisky has matured in sherry casks. Another element that can darken a whisky is time - the longer the years of maturation, the darker the colour will tend to be.