I have an outdoor plant thats about 3.5 feet tall and its about 2 weeks into budding. I recently noticed that the veins leading up into the leaves are turning purple and its continuing on the underside of the leaf as well. Its not any special strain or anything just bag seed. Wondering if this should be a concern to me or if i should just let it be?

Ill try n get some pics of it to try n explain better. smoke nug