Create rainbow effects mermaid effects or go bold with single color. For a toned down version of the blue ombre try combining grey and light pastel blue colors.
Pastel Hair 16 Idéias Que Você Vai Adorar Itscolorful http://itsacolorful.blogspot.com/2016/04/pastel-hair-16-ideias-que-voce-vai.html?m=0
50 Bold Pastel And Neon Hair Colors In Balayage And Ombre https://fashionisers.com/2016/05/10/pastel-neon-hair-colors-in-balayage-and-ombre/
Pastel Blue Ombré Lace Front Wig https://www.etsy.com/sg-en/listing/544931937/pastel-blue-ombre-lace-front-wig