I find it somewhat hard to work with labels in the designer, wenn the colour of them is the same like the form-background, cause if they lost focus you see nothing of them anymore and it is difficult to arrange them.
Thin frames around labels while workind in the designer would be a nice thing.
You're right of course - there are good workarounds for this issue and I make use of them. But it would be a not total useless inbuilt-feature of the designer - all the other visual controlls have frames - so why not labels?