Personally those orange fibers were so weird, so unlikely to be around Danielle, and not very prominent even in the MH, that I think they were planted on her long after she was dead and maybe even in the med examiner's office.
Remember, all of San Diego's establishment and media, including the cops and the judge, have lined up to kiss the VD's ass and to condemn Westerfield on no evidence.
All blue fibers were on the sheet, not the body. I thought that was strange. Where did that sheet come from? Who certified that it was clean to start with? was it stored in some cop's trunk with old uniforms?