A color that is lighter in value than its basic hue is known as a <em>TINT</em>. a color that is darker in value than its basic hue is called a <em>SHADE</em>.
Explanation:
Tints and shades are terms that belong in the theory of colors.
When we talk about tints, we are referring to those colors in which white was added to them to make them lighter.
On the contrary, shade refers to those colors in which black is added to make them darker.
There is also a third term that can be added to this category, and that is tone. Tone is a mixture of tint and shade, or simply when gray is added to a certain color.
so basically They observe how artists use different directions of lines to show emotions. They use watercolor paint to make different line directions – horizontal, vertical, diagonal, and curved – to show opposite emotions, like sad/happy, excited/bored and calm/worried.
