Whilst I love Flash Builder, it is somewhat daunting navigating the large amount of preferences. So, if you wish to change the font, size, and colour of your editing window here is where you go…
Window > Preferences > General > Appearance > Colours & Fonts > Basic > Text Font
For the background colour and stuff like that you go to …
Window > Preferences > General > (and click on the text) Text Editors
At the bottom of the panel you will now Foreground colour, Background colour etc.
One to be aware of – Flash Builder/Eclipse has a somewhat non-standard interface compared to most apps that run on a mac (or a pc for that matter). For example, the Preferences in the Window menu has no ellipsis (…) which is used to indicate that a dialog will appear.
Also, you can click on a Preference title (like Text Editors) and you will see choices, as well as clicking on all the options below a title. So it can be confusing as to where things are and how to access them.
Anyway, enjoy.
