If I turn off automatic image loading in my browser, which happens to be Firefox if that's relevant, the editor toolbar buttons become invisible and the toolbar itself quite indistinct.
Here's an illustration:
I have a suspicion that some of those people who post badly formatted code examples may actually be the ones who are simply unaware of the toolbar buttons being there, and that's what actually made me come up with this question.
I don't have actual numbers of how many newcomers post their questions with messed-up formatting against those who do things right, so it may not be worth the effort, but if it does appear reasonable, I have some suggestions of how to make the toolbar more distinct.
- Alt text: [B], [I], ... (sorry, haven't made up all of them yet).
- Frames around empty button slots.
- Different background for the button slots.
- Different background for the toolbar itself.