I found out that all of the Girly update items were shown in the wrong colour (they are all black and yellow, all yellow or all white colours) but the FHBR update and legendary items were fine.
Mane black not gold:
Ear feather not black:
Hipster glasses not purple:
Hat not rainbow and white:
Headphones not purple:
Rose not purple:
Vanity necklace not rainbow:
Heart necklace not black:
Spikey bracelets not purple:
Tutu not purple:
I tried replacing the Girly update items in my items folder and the items.cfg with the legendary, girly and FHBR update items but it still doesn't work. Is there any other way or was it just a glitch that needs to be fix?