Are my plants leaves changing colour as it's near the end of flowering or do I have a deficiency?

Hi everyone, my plant has been grown in the window and is around two weeks from harvest the Strain is auto chemdog from auto seeds. I'm getting the older leaves turning red and yellowing as well (see pic attached). I have read about all deficiencies and I know the older leaves tend to yellow in late flowering but still not sure what the red is thought it could be lack of phosphorus. Can anyone tell me what it is? any help will be much appreciated.

Sorry I can't help you, but deficiency or not that plant looks awesome like that

Yea it's not bad for on the window and does look pretty cool with the red leaves, it's getting cut down soon so it's not too much of a worry but would like to know for future grows if this is something I need to sort out. I'm not sure if it's normal on some strains.

That's just how that plant is presenting a Nitrogen deficiency.

I thought nitrogen would cause the yellowing but would that cause the red as well then?

that plant looks awfully dark to be N def. I did a little research and i havnt found anything on red leaves some are saying its just the genetics.