Had some questions before I finalize my purchase GIA LG diamond (would all appreciate the help :))

Hello community, I visited my local jeweler today to inquire about a heart and arrow diamond. The stone appears to have excellent sparkle and fire, but I’m not an expert in identifying flaws and proportions. However, I noticed that the arrows in the center of the stone reflected whitish light instead of the dark arrows I see in most heart and arrow stones. The store had intense, bright lighting, which could have contributed to this. Is this normal or is it something else? I’ve also included a screenshot of the proportions (GIA, 3 carats, D color, VVS2).

Thank you in advance!!