It is actually also known as Sharad Navratri as it truly is celebrated at the time of the start of Winter season. This generally falls during the month of September and/or Oct according to Gregorian calendar. मां ब्रह्मचारिणी (दूसरा दिन) द्वितीया तिथि Pink is a powerful colour that signifies appreciate, https://www.youtube.com/watch?v=QIX0JZlLsgE