Colored nicknames - PROBLEM

I have this option activated and it works but in the index o of the forum and of categories the autors of threads and responsers links are colored to, i mean, i just want colored nick's inside the topics, how can i do it?

Do you have groups? only groups can have colorized nicknames ( ACP-> Users & Groups -> Group administration)
Then if you have a group take care that you have checked "Color Group Members " within the group edint/create form

I know that i have members inside the grups and the colors are OK but what i want is that the users only have colored nicks inside the threads, outside i want to them be normal. My index looks like a rainbow and i dont like