Highlight selected timer block function
When using timer blocks it can get confusing to know which function you've set a block to. The icons are too similar and there's not enough text when mousing over the box to say what it does (If your block has a big name).
But, when right clicking to change the function of a block in the hotbar, the current function could be highlighted. That way if you don't know what it does, all you need to do is right click and scroll through the list to find the highlighted function.
For people like me who don't know programming but love timer blocks, this would be a huge help.