Eighteen pastel colors which are included in Pastels.gpl. A gpl is a GIMP Palette file(or format). If you use Inkscape ,you can add color palletes by doing copy and paste gpl files( like Pastels.gpl) from "GIMP2>share>gimp>2.0>palettes folder" to "Inkscape>share>palettes folder" .
Pastel-colors free icon was designed by yamachem for icons Png and presented to its users.
yamachem
2/7/2018