In this chapter, you learned how to create new themes. We can create complex designs and even completely change the look and feel of the default theme used in our application. Don't be afraid to change original files to fit your needs or to play with them. You can always get the original back from the SDK package of the Ext JS library.

One of the great things here is that we can create new themes and change values according to our needs. We also have the ui property and many looks for the same component.

In the next chapter, you will learn about responsive configurations and table support in Ext JS 5, which is a nice feature added in version 5x.