Pattern type

For any pattern except None and solid if you want it to look consistant you need to group objects with the same pattern type and color

To set up the pattern you need to select desired object: Then either tap Edit  menu > Entity > Preferences or rightclick on sideprojection and choose Properties submenu.

You can switch between different type of patterns: 

No pattern (default)

Solid (one color pattern)

Material - this draws texture - not quite supported and actually this is not needed.

And you can choose a line pattern type (4 different types of pattern)

This will make model creation more friendly