Answer: GRADATES

AnswerCrossword Clue
GRADATESBlends.
GRADATESBlends, as colors.
GRADATESSlopes by degrees.
GRADATESChanges slowly
gradatesto arrange in grades
gradatesto cause to gradate
gradatesto pass by gradual or imperceptible degrees, as one color into another
gradatesGRADATE, to change by degrees