This Lyons Tea ad is trying to sell you their tea by saying that they're tea is the best compared to the rest. The color theory is complimentary. The two colors (orange and blue) are very different and are opposites of each other so its a nice contrast. Considering the tattered edges black marks on the front I would say that the sign was probally made in the 70's or 80's because it looks so old and rusty. The first Lyons Tea shop opened up in 1894.