function fillHsluv(h, s, l) {
  var rgb = hsluv.hsluvToRgb([h, s, l]);
  fill(rgb[0] * 255, rgb[1] * 255, rgb[2] * 255);
}

function strokeHsluv(h, s, l) {
  var rgb = hsluv.hsluvToRgb([h, s, l]);
  stroke(rgb[0] * 255, rgb[1] * 255, rgb[2] * 255);
}

function fillUniform(brightness) {
    fillHsluv(0, 0, brightness);
}

function strokeUniform(brightness) {
    strokeHsluv(0, 0, brightness);    
}