I do not own Harry Potter. JKR does.
A Softer Shade
Helga stares out the stained glass window, her ring covered hand pressing against the cold tiles of glass. She sees the world in yellow; Salazar sees the world in green.
"Salazar, please don't leave." Helga covers herself with the rich emerald blanket, her red curls curving her round pink face as her blue eyes fill with desperation.
"I cannot allow myself to stay at a school where muggle-borns will defile the reputation of pureblood wizards and witches such as you or I," his back is turned to Helga, already dressed in his usual black and green attire. The morning sun was rising as its yellow-orange rays hit the profile of Salazar's face.
"What about what we all worked for? Please, Salazar, you are only limiting the potential of future witches and wizards. I thought Godric and you had arranged an agreement about this," she tries to reason with him, one hand stretching out towards him while the other clutching the satin sheets. "Are you not satisfied with one section of Hogwarts comprised of only pureblood students?"
Salazar turns towards her and gives her a piercing look with those stone-grey eyes of his. There was a flicker of amusement in his gaze but it vanishes as quickly as it came. "You were always the egalitarian. That…spark is what I loved the most about you, Helga."
The red haired woman's lower lip trembled ever so faintly, finally understanding what he meant. "Please don't go."
Godric and Rowena carry on as usual, presiding over the castle as if nothing ever happened. No one sits in the Head of Slytherin's office and every time Helga passes by, it's still bare and cold as if nobody ever sat in that room before.
Years pass and Godric dies of old age. Rowena dies of a broken heart. Helga is the last one left and she's sitting in her chair, looking out that same stained glass window with yellow shards of glass.