The colors that are seen when sunlight is split by a prism are sometimes called the spectral colors. These are red, orange, yellow, green, blue, indigo, and violet. These ROYGBIV colors are often reduced to three red, green, and blue-violet which are the primary colors for the additive color system (light).
Growing coleus from seed. Coleus seedlings are abundant with varying shades of color from the moment they pop through the earth. Their vibrant colors are intensified when grown under fluorescent lights. An abundance of light is a must if you propagate coleus indoors in January.
As winter crops, kale and collards can't be beat. These two members of the cole family are the least problematic and hardiest plants in the wide and varied Brassica tribe. Their major value to gardeners is providing delicious, highly nutritious greens when the weather is far too cold for other vegetables. You can harvest the leaves as needed throughout the winter.