In 2.9.4 I no longer see the green arrow at the bottom of the docker (as below) that you click on in order to bring in colors from the canvas. Was that taken out on purpose (or am I just missing something)?

It's not turned on by default because it takes some space. You can click the wrench icon to get it.

OK. I found it but I have no idea how I manged to turn it off

Hm, are you sure? I tried to reenable it and that didn't work. I suspect my attempt to make the defaults consistent broke something.

Yes. I had to turn on scrolling and then it showed up