PSG-based albedo spectra adopting an HST Jupiter template as a baseline, illustrating the impact of controlled perturbations in key atmospheric parameters. The examples shown include (1) a standard Jupiter-like atmosphere, (2) methane abundance increased by a factor of 5, (3) ammonia abundance increased by a factor of 5, (4) water-vapor abundance increased by a factor of 5, (5) carbon-monoxide abundance increased by a factor of 5, and (6) water-cloud abundance increased by a factor of 100. Within this setup, methane produces the strongest modulation of the reflectance at longer optical wavelengths and motivates methane-sensitive band placement in our optical diagnostics.