Easter color (5)
(Other definitions for pastel that I've seen before include "Staple light colour" , "Soft shade; crayon" , "Chalky crayon" , "art work" , "Delicate shade; crayon" .)
(Other definitions for lilac that I've seen before include "Purplish in colour" , "Pale purple - flowering tree" , "Shrub with fragment purple or white flowers" , "Shrub or small tree with fragrant blossom" , "Spiritual knowledge" .)