Colors are shown in the Status field in the Classic layout, and in the Order Status field that precedes the Financial Instrument in the Mosaic Activity Orders tab. You can see a mouse-over description of the order status color both in the Classic order line and in the Mosaic Activity Orders tab. If the order color description does not show, open Global Configuration and select Display followed by Settings.
In the Tooltips section of the Settings page, ensure that "Show order status information" is checked.
For more information on: Order Status Colors, please visit the TWS Users' Guide.