Red is a wonderful color, especially around Christmas time! The holiday lights, Santa hats, wrapping paper, all red! From the deepest shade of what could be mistaken for black, to the brightest pink almost without a hint of color!
Then how come Alya was so devastated looking at the red Christmas around her? Because it wasn't red with bright lights, Santa hats, or even wrapping paper.
It was red with what belongs to ladybug, chat noir, carapace and queen bee.
What belongs to Marinette, Adrien, Nino and Chloe
What belongs to her.
Or, I guess if you lose your life, nothing can really be classified as yours. So really, what was on the ground belonged to only Alya. There was more around her of course, but she could see is red. Her own... red as well as... theirs. Alya couldn't even bring herself to look at the once white black or yellow, now darkly... colored jackets. Or the blue t-shirt, once the same color as what was forming in her eyes.
She couldn't look at their faces.
Their clothes.
Most of all, their...red.
Red means blood.