Top: spectral energy distribution (SED) of the incident radiation field striking the cloud and outward radiation from each component modeled by Cloudy. The dark spectrum is the total outward radiation resulting from multi-phase build-up, and arriving to the observer. Photometry data from NED, Bendo et al. (2012), Galametz et al. (2009), and Rémy et al. (in prep.), and the IRS spectrum are overlaid in grey. Bottom: spectral energy distribution of the total outward radiation field and the reddened outward radiation field in dashed dark line. (This figure is available in color in electronic form.)