Disputed observation: is this dial colour shift real or just lighting? · RWI-02096

Several posts claim the newer batch of a particular blue-dial model looks more purple than the earlier batch. Others say it's purely photography and white balance. Can we settle this with evidence instead of arguing from different photos?

Record format: question; proposed response; source or method; limitation. Use a dated correction only if the underlying wording or evidence changes. Record RWI-02096.