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.
If you like a neighbor or a friends' Coleus plant, ask them if you can take a cutting or two. Select healthy, new growth. Place the cuttings in soft, rich soil. Keep the soil moist but not wet at all times. Covering them with glass or plastic will raise the humidity, and help them to root.Days to Germination: 7 - 14. Coleus Plant Care and Maintenance: Contrary to popular belief, Coleus plants thrive in full sunshine.overing them with glass or plastic will raise the humidity, and help them to root. Days to Germination: 7 - 14. Coleus Plant Care and Maintenance: Contrary to popular belief, Coleus plants thrive in full sunshine.