You can use blocks of colour to group together sets of related model elements, making it easier to see at a glance which elements belong together, for example the Services grouped within a particular Collection. By default, colour blocks are drawn around the members of Collections, Market Segments, Functions, Dimensions and Templates. For any particular view, you can set the colour block style that will be used for these elements by means of the Display Options dialog, available from the main Element menu. It is also possible to set custom colours for individual elements. For more details, see 9.2.3 Using colour blocks to visually group elements in a Collection.