How can I determine which option contracts are in the money?

TWS settings are saved separately for live and paper account users and need to be configured independently for each.  To configure, select the Edit and then Global Configuration options from the TWS menu and then the API and Settings from the Configuration pane. Then check the box for…

You can change the background by changing the application color. Do this from Global Configuration (in Mosaic, File menu > Global Configuration. In Classic, Edit menu > Global Configuration). Expand the Display section and select Style…

You can configure how a partial fill for a bracket order is handled in the Global Configuration window of TWS. Depending on your version of TWS, click the File (or Edit) menu followed by Global Configuration and select Presets. In the OCA Group area you can choose:…

You can change the position and P&L background color from Global Configuration:

1. In Mosaic, click on File menu > Global Configuration. In Classic TWS, click on Edit menu > Global Configuration
2. Expand the Display section and select…