or combinations of such graphical indicia the designs may be customized by the user or be provided by the manufacturer of system 10 the design can be provided onto the substrate supporting the design by printing silk screening etching etc in certain embodiments switchable d u00e9cor may have a luminescent effect i e glow in the dark for example as described in u s pat no 6 875 525 which is incorporated in its entirety by reference in this embodiment fixation sheet 16 includes a graphic 42 e g a corporate logo similarly as shown in fig4 a rear surface 44 of case 14 may also include a graphic 46 that is printed embossed or etched thereon referring to fig5 front surface 26 of case 14 includes a lip or ridge 48 that extends around the periphery of backwall 20 ridge 48 has a height the same or slightly larger than the combined thickness of d u00e9cor 18 and fixture sheet 16 so that once attached to fixture sheet 16 the edge of switchable d u00e9cor 18 is protected in this way the likelihood that the switchable d u00e9cor 18 is inadvertently removed is minimized in using system 10 the user carefully attaches rear surface 28 of fixation sheet 16 to front surface 26 of case 14 such that non permanent adhesive 34 on front surface 32 of the fixation sheet is exposed the user can then attach switchable d u00e9cor 18 to the non permanent adhesive on the front surface 32 of fixation sheet.