The basic requirement to add millions of colors to a remote desktop is: the graphics card on the system should be able to display more than 256 colors.
Basic Settings: Initially, you must make the client desktop suitable. For this purpose, start the server and right click on 'My Computer'. Select 'Properties' and activate the option 'Allow user to establish a Remote-Desktop connection' in the 'Remote' tab. Save these settings by clicking on 'Apply' and 'OK'. Now, open 'Start | Programs | Accessories | Communication | Remote- Desktop-Connection' on the computer of the client, enter the computer name of the server and click on 'Options' to display the connection window. Select a color resolution of more than 256 in the 'Display' tab. Click 'Connect' to start the session. Don’t be astonished if the client, in many cases, still uses a maximum of 256 colors. The reason for that is the default setting of the group policies.
Customizing The Guidelines: Open the group policies editor with 'Start | Run | MMC', go to 'File | Add/Remove Snap-in' in that and click on 'Add' in the following dialog. Then mark 'Group Policies', click 'Add' and ensure that the 'Local Computer' entry is marked in the 'Group Policies- Object' field. End the process by clicking 'Finish', 'Close', and 'OK'. Navigate in the structure under 'Guidelines for local computer' to 'Computer configuration | Administrative Templates | Windows-components | Terminal services'. Double click 'Limit maximum color resolution' on the right. In the 'Settings' tab, select 'Enabled' and determine the desired maximum value in the 'Color Depth' combination field. Then you can close the group policies editor. After these changes, the client's system will work with every color-setting up to the maximum value specified.





