How do I make solid block with non square form ?

I have ready baackground image, and need to mark solid blocks

Is there way to draw solid blocks border for all blocks in one time ?

I hope i understood what you want but can either :

-You can either create an invisble object with the behaviour solid in them and duplacte to recreate your level design .

-you can also export your ground separately and import it, then add the solid .

I hope that what you wanted yo know .