Abstract: A border assembly includes a semi-tubular reflector segment and a semi-tubular diffuser segment in front of the reflector segment. The reflector segment includes an inner sidewall and an outer sidewall, and a cavity therebetween. The cavity includes a backspace midway along the reflector segment and a front exit spaced therefrom. The reflector segment is configured, in relation to light emanated from the backspace, to discharge light originating from the emanated light through the front exit all along the reflector segment with a regular intensity, with the discharged light including reflections of the emanated light off the outer sidewall. The diffuser segment includes a back face positioned over the front exit and a front face spaced therefrom. The diffuser segment is configured to diffusively transmit the discharged light, resulting in the front face casting a glow.