Hello Maureen,
Thank you for sharing your dream with us. Please take everything that I share to the Holy Spirit as He Alone gives the accurate interpretation.
Pink has various meanings and can be negative or positive depending on the context. I believe the dream is illuminating the fact that your sister might have been twisting your thoughts/wisdom a certain way but someone will correct her thought processes/advice towards you. This person may or not be the Holy Spirit that will have an influence on her and it will be a new loving way of how she influences your thought processes or her thoughts towards you.
Shalom!
