You have a misunderstanding. The color upgrade files are not in this Forum.
Go to the Karaoke Home Producer Download page at
http://mtu.com/support/downloads/khpro/code.htm . You will need your Karaoke Home Producer download page username-password to access the files.
Scroll down the page above. You will find two files to download. Executing either of them on your system will change the Sweep color to that of the executed file. Executing either will replace the prior one. If you want to return to a yellow sweep, delete the file:
C:\default.kss
(Root directory of C drive, and the file to delete is default.kss) When the default.kss file is present, the color it contains is used. When it is deleted, the yellow color is used.