We are also adding support for using Android themes in the apps you create with App Inventor. Themes let you customize the look-and-feel of apps by specifying things like things like font size, color, and padding uniformly throughout an entire application. This first release will focus on changing certain colors app-wide, with more granular control coming in future releases.
Finally, weve added a full palette color picker to App Inventor to make it easy to use more colors in your apps. When you choose a color, select the "Custom" option from the dropdown list. This will open a color picker with a full range of color choices. After picking a color, click the "Done" button to finalize the change. Click "Cancel" to dismiss the picker and keep the existing color.
These changes also lay some groundwork for future improvements to App Inventor, so check back in the next few weeks for additional updates. For more detailed technical information on these changes, please see this document. Cheers, and happy inventing! Evan W. Patton Director of Development, MIT App Inventor On behalf of the MIT App Inventor Team