private static float OECF_sRGB(float linear) {
    // IEC 61966-2-1:1999
    return linear <= 0.0031308f ?
        linear * 12.92f : (float) ((Math.pow(linear, 1.0f / 2.4f) * 1.055f) - 0.055f);
  }
Use this instead of {@link android.animation.ArgbEvaluator} because it interpolates through the gamma color
space which looks better to us humans.
<p>
Written by Romain Guy and Francois Blavoet.
https://androidstudygroup.slack.com/archives/animation/p1476461064000335
lottie/src/main/java/com/airbnb/lottie/utils/GammaEvaluator.java