Photometric SEDs generated over specific time ranges during the first night after the burst from combined PAIRITEL, KAIT, Nickel, and UVOT measurements. All plots have the same horizontal and vertical scale, differing only in the vertical offset. The assumed host-galaxy extinction is based on a fit using a combined SED from all epochs (a fit assuming no host extinction is also shown for comparison). A clear red-to-blue transition is evident during this time. The three lines show the various fits to the data with the relevant parameters noted. "Fixed" indicates that parameter is held constant in the fit.