A method of packaging thermally labile goods. The method includes the steps of (a) obtaining a legend correlating some thermally labile goods with a first color and other thermally labile goods with a second color, (b) locating the thermally labile goods to be packaged on the legend and identifying the correlated color, (c) selecting thermally conditioned panels displaying the correlated color from amongst a plurality of panels displaying different colors wherein the panels are color coded in relation to the phase change temperature of the phase change material contained within the panels, (d) lining the retention chamber of a thermally insulated container with the obtained thermally conditioned panels, (e) placing the thermally labile goods to be packaged into the lined retention chamber, and (f) closing the container.