The definition of impromptu is something done without advance thought or without a plan. When everyone gets together and decides to throw a party at the spur of the moment, this is an example of animpromptu party. impromptu. an impromptu speech, performance, etc. impromptu.
If you prefer lighter color combinations, then instead of these three, go in for pink, light blue and pale yellow color combinations. Contrasting Color Combinations. By bringing together colors in different color categories, many interesting color combinations can be made.
This activity shows two different ways you can mix colors together to form a new color. The first way of mixing colors uses different colors of light. When we mix color this way, the more light we add, the brighter the combined color gets. By mixing just three colors of light, Red, Green and Blue, we can make any color we want. These are the primary colors we use to make the millions of different colors we see on TV and computer screens.