I had this tool for while, thought i could share it since I'm pretty done with pservers.
Download :
Virus total :
Download the file > put it into your client directory > "Make a backup file for your sro_client" > then remove sro_client > open the program > change the colors > click save changes > a new file will be generated with your edits "sro_client_new.exe" > rename it to "sro_client"
PS: Normal chat color is not working
Have fun