Nick Heisdorffer with Energy Control of Iowa, in North Liberty, smooths 3M DFPA Blaze dichroic glass film on a window panel of the covered passageway leading to the Pedestrian Mall in Iowa City on Tuesday. Heisdorffer and Alex DeWald are cleaning the 105 panels and affixing the acrylic glass finish to them. The beatification project should take the rest of the week to complete. The colors change as the film is viewed from different angles. (Jim Slosiarek/The Gazette) Alex DeWald (left) with Energy Control of Iowa, in North Liberty, washes a window panel of the covered passageway leading to the Pedestrian Mall in Iowa City on Tuesday. DeWald and Nick Heisdorffer are cleaning the 105 panels and affixing acrylic, dichroic glass finish to each panel. The beatification project should take the

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