tl;dr: Researchers tested semi-transparent cadmium telluride solar panels that let red and some blue wavelengths through (casting magenta light) while converting the rest to electricity, growing broccoli beneath them. Yields matched unshaded controls despite taking 25 extra days to mature, and the panels actually improved the microclimate by reducing vapor pressure deficit, boosting biomass conversion efficiency 2.8–4.5x. Macronutrient levels held up, though some micronutrients like iron and zinc dipped slightly. The study was small-scale and preliminary.