Leaves color and spots

Could be cold i always try to keep the temperature at night above the 15 degrees the "clawing leaves"are in my experience most of the time especially when it's cold outside the cold floor you can put your pots on a isolation plastic or keep them from the cold ground or use some heating cable to keep the floor warm that helps too for cold night but my opinion if you first try to keep the temperature at night above the 15 degrees and the floor warm and check every day after a hour that the lamp is on if the leaves are still clawing or not i hope this works out for you 🙏😊