The Instagram filter, "Lo-Fi" with the brightness pumped really does bring out the saturation on a dreary colorless day. See original image below for comparison.
If you know my photo style, you know I tend to stick with believable and natural color pallets for the most part. Before using Instagram from mid 2012 until present I would have never considered using a filter on a photograph. Today filters and Instagram are synonymous. But they're seeping into our consciousness from all the social media sites and finding their way into contemporary photography. Admittedly I can't ignore this. It's influencing me. Some of my work has been pushed a bit using an Instagram-like filter set I found online for only a few bucks, which gives me the ability to add and customize Instagram filters in photoshop.