White Lady
I started from THIS SITE and went hunting from there.
First, the lady ghosts all get their colors from the dresses that they wear:
White Ladies
These are the most common type of lady ghosts. They are typically associated with women who died from a broken heart, betrayal, or suicide. The cause is usually a male lover or a tragic accident surrounding a happy event such as a wedding. White ladies are found all over the world.
Gray Ladies
Not as common as the white ladies, there are quite a few around the world. The most famous one is in Willard Library in Indiana. She is described a kind and benevolent, so these ghosts aren’t seen as dangerous. There are stories where they are connected to a death caused by family conflict.
Lady in Black
Ladies in black have a much more infamous reputation. They are connected to feelings of grief and mourning due to their clothing, but they are also seen as spirits of vengeance. It is said that they were women who were killed unjustly. So, they are said to attack or cause fear in those they meet who are morally compromised. This is why they can also be connected to justice.
Red Ladies
Similar to the White Ladies, these ghosts are connected to love-based tragedies. In this case, they tend to be jilted lovers who were killed. Most stories have them die by an act of passion or rage. Now, some of the Red Ladies aren’t from a jilted lover story, but were simply very vain in their life. A third category of stories has these ghosts coming from women who lost a baby and were either killed or simply died right afterwards. So, these will be searching for their lost child and may even attack if provoked.
Blue Ladies
This is where I get surprised because I didn’t know the ghosts went beyond the first four colors. They aren’t as common and have very specific stories such as one who died during childbirth. Interestingly, the Blue Lady of ‘The Story Inn’ in Indiana gets the name from her eyes instead of her dress.
Green Ladies
As you can easily guess, these are female ghosts who wear green dresses. At this point, I think we can also assume that most lady ghosts are created by heartbreak. It is either the betrayal of a lover or the death of a child. Now, green ladies are typically found in Scottish castles. There is one mentioned in France who has no face and another in Hawaii, which is occasionally described as more of a Japanese kappa. Kappa is a turtle-like water demon.
The Brown Lady of Raynham Hall
This is a single ghost who wears a brown dress who is found in Norfolk, England. She is supposedly the spirit of a woman who was locked in her rooms after being caught having an affair. Some versions of the story having her be tricked or her lover’s wife had something to do with it. Either way, she was locked up in Raynham Hall where she couldn’t even see her children. Upon her death, she began haunting the place.
The Purple Lady of Rio Grande Depot
Another category with a solitary member, this is the ghost of a woman who was hit by a train. The story goes that she got in an argument with her fiancée and her ring was thrown onto the tracks. She hurried to get it back and was hit by the train. Now, she wanders the depot and will occasionally be heard singing.
Beige Lady of Virginia Hotel
Just like the last two, this is a lady ghost with a specific story of heartbreak. This time, she was a woman waiting for her fiancée to arrive by train. Not sure why the last two all involved trains. The man never showed up and nobody knows why. So, the woman threw herself out a window to her death.
The Pink Ladies
I didn’t expect this color to be on the list, but I had to make them last. I feel like seeing a pink ghost would be amazing and not as scary as the others. Now, they aren’t always wearing pink like the other colors. Many reports have them as pink mist shaped like a woman and drifting around. The most famous is in Grove Park Inn, North Carolina where she is either in a misty form or a full ballgown. The story goes that she was a young woman who was at a party and fell off a balcony.
Legends of Windemere 