station_obscurum_unity/Assets/Scripts/UI/ObjectiveText.cs

using System;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

[ExecuteAlways]
public class ObjectiveText : MonoBehaviour
{
    [SerializeField] public List<VisualObjectiveItemGUI> visualObjects;

    [SerializeField] private Color inCompleteColor = Color.white;

    [SerializeField] private Color completeColor = Color.yellow;

    [SerializeField] private float speed;

    [SerializeField] private Animator animator;

    // Start is called before the first frame update
    private void Start()
    {
    }

    // Update is called once per frame
    private void Update()
    {
        foreach (var item in visualObjects)
            if (item.isComplete)
                item.icon.color = Color.Lerp(item.icon.color, completeColor, Time.deltaTime * speed);
            else
                item.icon.color = Color.Lerp(item.icon.color, inCompleteColor, Time.deltaTime * speed);
    }

    public void FadeOut()
    {
        animator.Play("FadeOut");
    }

    public void FadeIn()
    {
        animator.Play("FadeIn");
    }
}

[Serializable]
public class VisualObjectiveItemGUI
{
    public TMP_Text text;
    public Image icon;
    public bool isComplete;
}