Red Brown Cent Preservation Question

Hello forum, it's been a while since I last posted and reached out to the community for advice. Approximately 5-6 years ago, I saw a post regarding penny rolls and the detrimental effects of old paper wrappers on coins. As such I transferred the rolls my dad passed down into modern plastic coin holders. I revisited them today and would appreciate any thoughts you might have. It appears that the edges of most of these cents are brown. I was considering putting most of these in air-tites, but wasn't sure if that was necessary, or should I just leave in the plastic coin holders. These are stored in a safe with a dry rod dehumidifier. Thanks in advance for your thoughts and suggestions.