There is 3 possible reasons to a "gray borders" problem:

1. The concerned element is not in your current permissions scope (eg. you are working for the "Novecare" GBU, but the component is owned by the "Finance" function)
2. Someone else is currently working on the concerned element, or worked on it without properly releasing it (closed the browser without clicking "Finished editing" or "Cancel editing")
3. The component is "Shared with another website" (inherited from another website or language).

Each or these cases need a different approach:

Not in you scope

Identify

What to do?

Checked-out

Identify

What to do?

Shared

Identify

What to do?