Common use of Colours Clause in Contracts

Colours. Colours such as red and blue are commonly used to distinguish hot and cold for example. However, status should not be indicated by colour alone since a significant portion of the male population has problems distinguishing red/green or blue/yellow. In addition older adults are prone to decreased sensitivity to colour particularly for yellow and blue/green combinations (Echt in ▇▇▇▇▇▇▇ et al., 2003). Therefore avoid signalling important information using short wavelength (blue-violet-green) contrasts (▇▇▇▇ et al., 2004); these combinations can be used in decorative graphic elements as long as their use does not require discrimination for the understanding of the graphic (▇▇▇▇▇▇▇ et al., 2003). References to colours in text should be avoided in general because they may not be detectable to all readers, especially individuals who are colour blind (▇▇▇▇▇▇▇ and ▇▇▇▇▇▇ in ▇▇▇▇▇▇▇ et al., 2003). People with retinitis pigmentosa often have difficulty reading red displays (▇▇▇▇, 2004).