@phaserjs/phaser/colormatrix/Sepia.js

Phaser 4

import { DEFAULT_COLOR_OFFSET } from "./const";
import { SetColorMatrix } from "./SetColorMatrix";
const values = [
  0.393,
  0.7689999,
  0.18899999,
  0,
  0.349,
  0.6859999,
  0.16799999,
  0,
  0.272,
  0.5339999,
  0.13099999,
  0,
  0,
  0,
  0,
  1
];
export function Sepia(gameObject, multiply = false) {
  if (SetColorMatrix(gameObject.id, values, DEFAULT_COLOR_OFFSET, multiply)) {
    gameObject.color.colorMatrixEnabled = true;
  }
  return gameObject;
}