How to understand red and green colors for level 2 data from the volume analysis section?

I’ve searched quite a bit online but all I find about the volume analysis is just like normal candle sticks along with the volume bars below them. But this is a different chart.

I’m specifically talking about the right side of the image. I don’t understand what the green, red and clear color indicate

• Why is 0.56 mainly red?

I was told it’s because there were more sellers. But for every order don’t you need the same amount of buys and sell?

• Also why does .8250 have a clear color in it? What does that mean?

• Last but not least. For 0.65 I see it says that’s 5.02% of the transactions. Is that 5.02% of transactions since the beginning of the day or the week? Does that percentage change as new orders arrive? How often does it get changed?