The focus of this work was first to compile a literature review of the most relevant nanophotonic approaches proposed to realize structural colours for decorative and building-integrated solar cells and modules. Then, based on the gathered information, an alternative fabrication technique was proposed and experimentally investigated. From the literature review it was observed that the fabrication of colourful solar cells had been successfully achieved by integrating light filtering structures showing reflective structural colours (as opposed to light absorbing colours, e.g. dyes and pigments or metals), with different photovoltaic technologies. In general, the exploited light filtering mechanisms can be divided in multilayer interference, thin-film interference, diffraction gratins, plasmonic resonance and photonic bandgap in photonic crystals.