Purpling in flowering

My plant has been in flowering for 8 days now and they stem/leafs are turning purple. I also changed my light from led to two T5 6500k 2foots. I dont know if that could cause the change. I also know its temp never drops to very low but when it was young it went through some cold nights/days. it had a very little amount on the stem when i first moved it but it has really expanded. Any advice would be great.

Ill add pics as soon as i can.

Thank you

If it is similar to this you should be ok:

The purple of those leafs is like the same as the color as my stem. Is that ok?

What Strain are you growing? Turning purple is part of genetics as well as environmental conditions!

its just a seed i found one day dont know the strain