Hi Stefan,
Yes, it is possible to adjust those settings. You can add parameters to the rdp command as follows:
server:port/?Parameter1=value&Parameter2=value&Parameter3=value
To change color depth you use bpp=xx , where xx = 8,16,24 or 32.
To change screen size use geometry=widthxheight i.e. geometry=1024x768
You can see more options by viewing the RDP page on the Clientless SSL VPN homepage.
Here's the full list if you're interested:
bpp=integer - Color depth in the popup window to be opened. The value is the number of bits per pixel to reserve for specifying color. Enter 8, 16, 24, or 32.
command=string - Working directory.
console=yes - Connect to console.
debug_hex=yes - Show bytes sent and received.
debug_key=yes - Show scan code sent for each key pressed.
debug_level=string - Severity of debug output to log. Enter DEBUG, INFO, WARN, ERROR, or FATAL.
domain=string - Logon domain.
geometry=widthxheight - Specifies the width and height in pixels of the popup window to be opened.
hostname=string - Client host name.
keymap=string - Keyboard mapping file name for terminal server.
password=string - Password to log on to the server. The password displays in the text box as you type it; use only with care and make sure no one is observing. Otherwise, wait for the password prompt instead of entering this parameter.
port=integer - RDP port number. The default RDP port number is 3389.
rdp4=yes - Enables use of RDP Version 4.
shell=string - Shell.
username=string - Username to log on to the server.
Enjoy!
--Brandon