Poinsettia length. The colored bracts—which are most often flaming red but can be orange, pale green, cream, pink, white, or marbled—are often mistaken for flower petals because of their groupings and colors, but are actually leaves. The colors of the bracts are created through photoperiodism, meaning that they require darkness (12 hours at a time for at least five days in a row) to change color. At the same time, the plants require abundant light during the day for the brightest color. The flowers of the poinsettia are unassuming and do not attract pollinators. They are grouped within small yellow structures
Colour trade mark Colour trade mark A colour trade mark (or color trademark, see spelling differences) is a non-conventional trade mark where at least one colour is used to perform the trade mark function of uniquely identifying the commercial origin of products or services. In recent times colours have been increasingly used as trade marks in the marketplace. However, it has traditionally been difficult to protect colours as trademarks through registration, as a colour as such was not considered to be a distinctive 'trademark'. This issue was addressed by the World Trade Organization Agreement on Trade-Related Aspects of Intellectual Property Rights, which broadened