Pastelgender is a xenic aesthetigender under the colorgender umbrella connected to pastel colors. It can be all pastel colors or just a select few.
One who feels this gender may refer to themselves as Pastelboy, Pastelgirl, or Pastelenby (short for non-binary). One who identifies as pastelgender might use pronouns such as pastel/pastels/pastelself, but they do not have to.