1. A method of generating a user interface (UI) visual presentation attribute scheme while preserving visual consistency of selected visual presentation attributes in the color scheme, the method comprising: establishing a hierarchy of UI elements in a directed acyclic graph of nodes, each node corresponding to a different UI element and specifying a visual presentation attribute corresponding to the different UI element of the node, the hierarchy defining different pairs of parent-child relationships amongst the nodes; establishing a transformation rule for each of the different pairs of parent-child relationships; assigning a visual presentation attribute to a parent one of the nodes in the hierarchy; computing a visual presentation attribute for each child node descending from the parent one of the nodes according to an established transformation rule; and, exporting the hierarchy into a visual presentation attribute scheme.