If you have 15 fish in your inventory the 1 in the "15" is in front of the fish icon, but if in the toolbar the 1 is nearly entirely obsurced by the fish icon.

I think not having at least a "Repeat mining efficency tech" option seems like an oversight if you're gutting this proposed feature.

Personally I think having the techs light up when their requirements are queued might help with progression rather than hinter it. You could, say, queue up oil ...

TL;DR

Please introduce "/colour" as an identical command to "/color", rather than being undefined

Why ?

Reduces frustration and confusion for non-US players who tend to be used to -our ending to a word. I forget why it doesn't work every time.