Text after PROMPT is always in uppercase

Sql*plus allows PROMPT text to be in mixed case, but TOAD does not seem to allow this. Is there a way to achieve this?

when I run this in the editor with F5

prompt Blah Blah
select ‘blah blah’
from dual;

the output is

Blah Blah

‘BLAHBLAH’

blah blah
1 row selected.

are you doing something different?

Toad displays the text in uppercase in the Editor, but when I execute as a script, text is in the proper case. Just would be nice to see it in the correct case.