5x7, acrylic on board
People love color, and so do most artists. It's fun to take a painting to it's color limits. I don't often make up color, but sometimes do exaggerate the colors in the landscape to full potential.
In today's daily painting the orange elements have been pushed to the point where they are rich and full. A little blue-green in the foliage cools the painting just enough to keep it from being too hot. The blue-green compliment gives it interest, too.
There are many things to know about getting color balanced in a painting, and many ways to do the balancing. Books (will they be a thing of our past, now, with Kindle?) and online articles can help you learn about painting with color. Stephen Quiller's Color Choices, which you can get from Amazon very reasonably priced, is a nice way to start. And here's an online article created by artists for artists with color tips.
The most important thing to know is when it works for you, the artist. When you get it right it will usually please other people, too.