leaves going purple?

[smarty]

got a couple of plants near harvest outside and i have noticed that the odd leaf is turning purple. i dont think they are growing purple as the bit of leaf inside the bud is still green. any ideas?

 

[nongreenthumb]

Outdoor temps mate

 

[Lacy]

Yeah. Its just 'cause it is getting colder smarty and nothing to worry about. Mine are going purplish also.
I THINK IT LOOKS COOL.

Outdoor temps mate

 

[mr.x007]

temps. ive had the hole top half of my orange crush go purple

 

[smarty]

that must be it then, its been freezing here for a while on and off.

thanks guys