There is provided a method for customizing a customizable theme of a user interface of a communication device. The user interface includes a plurality of screens having one or more modifiable screen attributes. The method further includes: receiving a base theme comprising a plurality of layers, each of the layers comprising at least one graphical object, the graphical object having one or more graphical properties; mapping each one of a plurality of screens of the user interface to a respective one of the plurality of layers, each of the mapped screens having at least one screen attribute associated therewith; mapping each respective at least one screen attribute to the graphical properties of the at least graphical object of the respective one of the layers, the mapped screens and the least one screen attribute defining the customizable theme of the user interface; receiving an attribute modification request for modifying the at least one screen attribute corresponding to a first screen of the plurality of screens to customize the customizable theme; determining the mapping of the at least one screen attribute to the graphical properties of the at least one graphical object of the respective one of the plurality of layers; and modifying the graphical properties of the at least one graphical object according to the attribute modification request and the mapping of the at least one screen attribute.