The term 'COLORFUL SPRING FLOWER' can be solved by two crossword solutions: PANSY (5 letters) and BUTTERCUP (9 letters). Pansies are a type of flowering plant that is often seen in the springtime. They come in a variety of colors, including purple, yellow, and white. Buttercups are also a type of flowering plant that bloom in the spring. They are usually bright yellow in color, but can also be found in shades of white and orange. Both pansies and buttercups are popular choices for gardeners looking to add some color to their outdoor spaces.