The red poured out of the glass. Blood. Blood was spilling out of the glass, crimson and dark. Blood spreads fast, especially on such a white surface as snow. I always got nosebleeds in the winter.
A dash of blue fell onto the snow, near the blood. The icy blue colour complimented the red. They could make the darkest, icy violet. Paint was still dripping from her brush. She always painted.
The green. It was the grass. Cold and dead in the winter. If it was here, the contrast would be too high. It was once here, in the summer, even in the winter when the winters weren't so cold. Every year as the blood spilled and the paint splashed, it was here. But this winter is too cold. She was there before.
I guess the red and blue stayed because they're primary colours. Only yellow has to come to complete them.
And the yellow came along quite fast, with the yellow sun beams shining down on the blood and paint, making them both glisten in the light. She was always shining.