The absorption spectra of the CNPs (which can be found in Figure in the SI) indicate that the optical response of the CNPs can be dramatically tuned by changing the diameter of the underlying dielectric bead. Not only can the energies of the resonances be tuned this way, but their oscillator strength and lifetimes also depend on the diameter. The two CNPs studied here were chosen because they have SMA resonances at around 2 eV, giving good overlap between at least one SMA resonance and the absorption resonances in MG, which occur at at 2.02 and 2.13 eV. For example, CNP600 has a series of SMA resonances with strong oscillator strengths at energies of 1.98 eV, 2.20 eV, and 2.27 eV. CNP400 has a strong SMA resonance at 2.04 eV with almost perfect overlap with the lower energy absorption resonance in MG; however, the oscillator strength for this resonance is slightly smaller than those in CNP600.