I found this information very helpful. It is from http://www.walkinevolution.com/newkids/newkids.htm
Indigo, Crystal, Starseeds
Indigo Children have a warrior's spirit; part of their mission is to change our systems and the way we do things. They are here with the desire to change our antiquated systems and beliefs.
In the process, they will rebuild our world with better ways of doing things that fit our times and level of evolution. Expect them to change our beliefs and structures concerning the government, education, health, and legal systems.
These children are currently affecting the way we parent and educate. They are highly sensitive and very psychic, and many feel they do not belong here. Too often, they are often diagnosed as having Attention Deficit Disorder (ADD) or Attention Deficit Hyperactivity Disorder.
The first thing that you will notice about Crystal Children are their eyes. Large penetrating and wise beyond their years. They are highly sensitive, psychic and have an important life purpose.
Crystal Children have delayed speech patterns. It's not uncommon for them to wait until they are 3 or 4 years old before they start speaking. They prefer to communicate telepathically instead of by using their voice.
It's no coincidence that as the number of Crystal Children are born; the number of diagnoses for autism has risen.
These children are unconditional loving in nature; many stories exist of Crystal Children laying their hands on someone to heal them.
Starseeds often feel alone, as if they do not belong here or within their families. They are filled with a sense of purpose. They care for the environment and the have a strong connection to the Earth.
They know they are different from classmates and find friendships difficult. They are inquisitive about most things and it is difficult for them to relate to others.
Star people often feel misunderstood; they have a spiritual awareness that comes naturally to them. Much of what happens on Earth is illogical to them. They know we are all one and can't understand why others do not remember and act accordingly.
They are filled with love and compassion. And they care greatly about preserving and creating harmony on planet Earth.