now theres a tint of purple on the leafs?

okay i think i know why they werent growing as fast as they
should have been. they were in little pots so i decided to
transplant them and now they are growing faster than before.
their still extremely small but they'll catch up haha their 18
days old today. and i switched them to 18/6 a couple days
ago. do they look healthy now? and what is that purple tint?

They look very healty, all the seedlings and clones i have ever grew always started with a bit of purple. Im pretty sure its normal and its a sign of a healthy plant. The purple is normally on the stems or in some cases on the leaves but it usually tends to go away after a week or two when the plant starts to strengthen and grow up

ok good. i was worried yet again lol

Nope nothing to be worried about the purple is fine. They are looking very healthy!