Genetics or something else?

White widow, 4 weeks into flowering. Some of the leafs are developing purple edges, and some starting to turn purple further in from the edge.
Almost all of the leafs right around the bud are doing it to some extent, but more noticeable right around the buds that are from secondary branches, the main colas are still doing it just not as noticeably.
Leafs look pretty healthy otherwise, and plants aswell for the most part.
3 dif plants displaying same thing
(Suppose to be white cookies a cross strain of white widow, but package said "wwf" so I assumed they were just regulated white widow.
The purple looks cool and all, but it its not genetics I definitely want to take care or it

Also have "blurple" lights so some places may appear more purple than they are, and of course a purple hue that makes everything look purplish, but everything is truly green except for the deeper reddish purple around edges and in places of similar shade

You need to turn off your light and take your picture using the flash of your camera. Plant or plants looks good and healthy.