1988: Magic Message Ponies
Coral unicorn with white mane and tail (green streak in mane), dark green and white clouds (reveals a dragon/castle<?> when heated)
First thing to note is that Cloud Dreamer's hair is not faded - she is actually meant to have white hair!
Cloud Dreamer was the unicorn from the set and, in typical unicorn style, her appearances usually involved magic and clouds. Her pony comic personality page suggests that her special symbol messages lead her into magical lands where she meets friends who need her help. In one Fizziwhizz Night related comic edition, she made the acquaintance of a cloud dragon called 'Cloudie', and along with Princess Pearl, Fiery and Prickles, she had to help him find silver paint to paint the linings on clouds.
She is one of the harder to find ponies from the set - and her symbol can often be quite badly damaged (on one occasion I found one with no symbol left at all!)
Cloud Dreamer was sold worldwide and kept the same name everywhere.