highlight all daily volume bars over 10 million shares of volume

Do you really want to “know how to create” this….? Or are you just asking me to create it?

If you are asking how, I can give you some guidance and you can try to work this out on your own.

You already have the condition worked out, so you should be able to write that statement without any problem.

The way we change the color of the candle is by using “AssignPriceColor()”. (There are several examples scattered throughout the forum)

It basically looks like this:

AssignPriceColor(if condition then Color.YELLOW else Color.CURRENT);

There you go. I have shown you how to create it. You should be able to do this in two statements, one if your good.

Update 11/9/18
After comments from the author of this post I realized I did not understand the request clearly

Sorry about that. I missed the part that you are asking to color the volume bars. I thought you wanted to color the bars on the chart. So here is a full lower study that plots volume bars (which must be done before we can color them).

plot volumeData = volume;
volumeData.SetPaintingStrategy(PaintingStrategy.HISTOGRAM);
volumeData.SetLineWeight(3);
volumeData.AssignValueColor(if volumeData > volumeData[1] then Color.GREEN else if volumeData > 100000000 then Color.YELLOW else Color.RED);