Changing the color of the frame at the top

[José Antonio Delgado Osuna]

Hi everyone,

  I am new in Apache Forrest and need some help in changing the colour 
of the frame at the top of the page (the place in which appears 
"MyGroup>MyProject>"). It has the #cedfef colour, and I don't know where 
to change it.
 If you could help me I would be very grateful.
Thank you very much.

--Jose