If you followed the steps in the last post on setting up your development environment to leverage SASS, you should be all set to start rocking some seriously awesome custom themes for your Sencha Touch app. But before you dive in, you might take a few moments to take a deep breath and survey all that’s going on to build out the default Sencha Touch theme.

It’s not that you couldn’t immediately jump in and produce something awesome–you definitely could, and it would be pretty simple. I suggest browsing the default theme, however, because despite how easy it is to being customizing your own .scss file with new colors, icon masks, and whatever else strikes your fancy, actually understanding (if even in a very preliminary sort of way) what’s going on will help prevent future frustrations that may dampen your sudden excitement to start theming.

With that thought in mind, let’s take a few moments to peek around the default theme to see how the magic happens.

config.rb

In your Sencha Touch installation, browse to /resources/sass/. In this folder, you’ll see a file named config.rb. This file, written in Ruby, is one of those “setup it up and leave it alone” kind of files. More >