(vi) Learn the color properties of CSS

Reference: http://www.w3school.com.cn/cssref/pr_text_color.asp

The Color property specifies the colors of the text.

This property sets the foreground color of an element (in HTML representation, the color of the element text), and the raster image is not affected by color. This color is also applied to all borders of the element, unless overridden by a border-color or another border color property.

The easiest way to set the foreground color of an element is to use the Color property.

             The value description Color_name a color     that specifies the color value as a color name (such as red). Hex_number a     color that specifies a hexadecimal value (such as #ff0000). Rgb_number     Specifies the color value of the RGB code (such as RGB (255,0,0)). Inherit        specifies that the color should be inherited from the parent element. 

(vi) Learn the color properties of CSS