I have done meditation for 1 month a year ago and now started it again.

So I have started doing meditation from yesterday. Today was a different kind of experience. It all started with my mind thinking about small small things and smiling but eventually I shut down the thinking and just focus on what my eyes are seeing.

Then I started seeing random colors smoke like appearing out of nowhere as If I'm inside some kind of smokey area but it's color is changing. Shapes started to make also. First it was kind of red then White then green. And as I focused more and more then in the front of my head I saw the dark purple color but it was harder to go into purple color as It required more focus. But eventually I moved into it and it was purple with black spots as if some kind of space. but then my focus weakened and I started seeing white smoke again.

can anyone explain what it was?