I have bought it and it has never looked like this..Did you bring the contrast of the photos up or do they have a new rainbow? Sorry we are all discussing in a HUGE group and I am being told I am a liar. I said which kind it is and no one believes me.
My wife took the pics with her iPhone so it may have defaulted to HDR and that would punch up the colors some. We have used both the Creality Rainbow PLA and Creality Rainbow Silk PLA, but the silk's yellow isn't the same as this. We usually buy the 2 pack from Creality's store on Amazon that has 1kg of Rainbow PLA, & 1kg of Rainbow Silk also the Rainbow PLA by itself and they have been the same for us so far. Sorry they don't believe you!
Below is a smaller turtle in the same Rainbow PLA.