Hi,
This is not clear (to me) when you said "color of the SAP Gui screen".
This option is not available to all versions of the SAP Gui family. Actually, I am running SAP Gui 7.20 and I no longer have this option.
Besides, it is a user option in old SAP Gui version that you shouldn't (cannot?) change from the server side.
However, there is several options to deal with this:
1) you can have a message displayed when the user logs on remining him/her of the current environment attributes (refresh date, and so on...) -> this is a bit annoying to have it each and every time
2) you can set up an image on the "home" screen
3) you can set up a web page on the "home" screen ! (I think this is the right solution for you, you simply have to generate a web page with the latest information and point to it)
For option 2) and 3), check table SSM_CUST and the OSS Note 1387086 (for 3), check the SESS_URL parameter)
Best regards,
Guillauem