I love color but I also like to paint with a limited palette. White is always exciting to me because it adds a punch of interest to the painting. I planted white tulips at my house this year and they are so good because they really show up in the yard compared to other colors that blend into the landscape. I am always amazed at the different greens in nature. Some beginner artists make the mistake of using green right out of the tube.I most often mix blue and yellow on the palette to get vibrant greens. A way to make a duller green is to add a bit of red, the complement of green. There goes that sneaky color theory again!