Textures are color patterns, some of which are taken from nature (leaves, bricks) and some of which are computer generated. To choose a texture for a Fill or Border color, select Textures from the color-picker menu on the Tool Settings Panel.
Select Texture from the color-picker drop-down menu
In the Select Texture dialog, choose a texture by clicking on one of the thumbnail previews. You can scroll through additional textures using the black arrows below the thumbnails.
Select a texture as your fill or border color