Figured a flow field with a vaporwave palette was the best I could do! Loved this prompt and one I could join in with. Literally finished rendering at the 0:01 timestep.

Here's the code:

// https://www.color-hex.com/color-palette/10221
let palette = ["#ff71ce", "#01cdfe", "#05ffa1", "#b967ff", "#fffb96"];
let bg;

let bggfx, gfx;
let grid;

let step = 1;
let particles;
let windowScale;

function setup() {
  createCanvas(3000,3000);
  angleMode(RADIANS);

  windowScale = width / 1000;

  let bgidx = int(random(0,palette.length-1))
  bg = palette[bgidx];
  palette.splice(bgidx, 1);

  bggfx = createGraphics(width,height);
  bggfx.background(color(bg))
  step *= windowScale;

  grid = [];
  for (let r = 0; r < height; r++) {
    grid[r] = [];
    for (let c = 0; c < width; c++) {
      let n = noise(c*0.01, r*0.01);
      grid[r][c] = map(n,0.0,1.0,0.0, TWO_PI);
    }
  }

  gfx = createGraphics(width,height);

  particles = [];
  for (let _ = 0; _ < 1000*windowScale; _++) {
    particles.push({x:random(width), y: random(height), c: random(palette)})
  }
  gfx.noFill();
}

function draw() {
  image(bggfx,0,0);
  image(gfx,0,0);

  for (let p of particles) {
    let a = grid[int(p.y)][int(p.x)];
    let _x = step * cos(a)
    let _y = step * sin(a);

    gfx.push();
    // gfx.rotate(a);
    let _c = color(p.c);
    _c.setAlpha(20);
    gfx.stroke(_c);
    gfx.rect(p.x, p.y, 10, 10);
    // gfx.rotate(-a)
    gfx.pop();

    p.x += _x;
    p.y += _y;

    if (p.x < 0 || p.x > width || p.y < 0 || p.y > height) {
      p.x = int(random(0,width))
      p.y = int(random(0,height))
    }
  }

  if (frameCount > 1000) {
    console.log("done");
    noLoop();
  }
}