variegation -
the act of introducing variety (especially in investments or in the variety of goods and services offered); "my broker recommended a greater diversification of my investments"; "he limited his losses by diversification of his product line"
Variegation is the appearance of differently coloured zones in the leaves, and sometimes the stems, of plants. This may be due to a number of causes. Some variegation is attractive and ornamental and gardeners tend to preserve these.
OmegaWiki Dictionary
Ω
variegation The act, or the result, of diversifying.