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.
Cover with cloches or fleece â the temperature lift makes all the difference. Indoors: Grow sweet potatoes in a glasshouse in large tubs, growing-bags or the glasshouse border, transplanting from the pots once they have produced plenty of roots. The foliage can be trained up string, canes or trellis.