UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support When I update the config and theme files, the changes don't seem to take place

My web developers are going to kill me in the morning. Stupid me entered this into the SQL command under DB Management and then hit submit:

UPDATE w3t_Users SET U_StyleSheet = 'somestylehere'

Now the message board has literally lost all of its color and has a white background except for the links. Is there any command I can enter that is like the antidote, i.e., will reverse my stupid mistake? I feel like I'm drowning in this message board.