MixColors

MixColors.cs

using UnityEngine;
using UnityEngine.UI;

[ExecuteInEditMode]
public class MixColors : MonoBehaviour {
    [SerializeField]
    Color[] colors;
    [SerializeField]
    Image image;
    [SerializeField]
    float multiplier;

    public Color result { get; private set; }

    // Update is called once per frame
    void Update() {
        if(colors == null || colors.Length == 0) {
            return;
        }
        var r = 0f;
        var g = 0f;
        var b = 0f;
        var a = 0f;
        foreach(var c in colors) {
            r += c.r;
            g += c.g;
            b += c.b;
            a += c.a;
        }
        r /= colors.Length;
        g /= colors.Length;
        b /= colors.Length;
        a /= colors.Length;
        result = new Color(r, g, b, a);
        result *= multiplier;

        if(image != null) {
            image.color = result;
        }
    }

}