I'm Choking (But I'll Do It Again)

It starts the night of their first hug.
Wednesday crawls out of bed as soon as she's sure Enid's asleep, stumbling towards their dorms, gritting her teeth through the pain as her skin blisters.
And she shouldn't touch Enid, with all her color. She knows it. But Wednesday Addams cannot seem to stay away from Enid Sinclair, and she thinks that maybe dying to be able to touch Enid is worth it.

In which Wednesday is actually allergic to color and refuses to tell Enid because she hates the idea of Enid changing for her. The allergic reactions continue to get worse every time Wednesday spends longer and longer in contact with Enid, until touching Enid leaves her choking for breaths.