This is just a container of all issues that got reported in the collection threads.
Ideas
The yfTop_SP08TeeBoatNeck from Backyard Stuff Pack has too identical top colours when both the swatch colour and file name (taken from S4S) are different, indicating they should be two different tops:
This is the correct one - the swatch is linked to file yfTop_SP08TeeBoatNeck_HeartGrayThis is the incorrect one - it is a white swatch which links to file yfTop_SP08TeeBoatNeck_SimlishWhite, indicating the top should be a white T-Shirt with simlish, similar to some of the other swatches.