From WikiBrite: The Rainbow Brite WIki
Tickled Pink is one of our new friends. She's always giggling--and she likes to make other people laugh, too! ~ Rainbow Brite "Friends Forever" Coloring Book (2005)
Not much is known about Tickled Pink. She was introduced for the first time in the "Rainbow Brite and the Star Stealer" Feature film, and the later episodes of the television program. While her character wasn't noticably popular, she was marketed as a "Dress-up" doll and on the packaging for the "Sunriser" horse, she is mentioned as her rider. Nothing much else is known about her. We will add more information as it is discovered.
Tickled Pink (2009)
Don't you just love the colors of the sky at sunrise and sunset? Tickled Pink does! Each day she wakes up before dawn and paints the morning sky with her Sun Scepter, then reappears at dusk to make sure the sunset is picture-perfect. Tickled Pink is one of Rainbow Brite's best friends. And no wonder--she's always bright-eyed, chipper, and ready to lend an encouraging word! ~ Description via www.RainbowBrite.Com
Twilite
Twilite is Tickled Pink's trusty friend. This perky little sprite is keeper of the fiery color crystals that Tickled Pink uses to paint the sunrise and sunset. Tickled Pink is constantly on the move, racing the sun from on side of Rainbow Land to the other. But when she and her horse Sunrise take a break, Twilite is always ready with a smile and a fresh bundle of color crystals.~ Description via www.RainbowBrite.com