Hello,
I would avoid to do so.
With the matt-black paint, the space between the cabinet and the bottom of your BV5 is black and visually "disappears", as if the TV was "floating" a few centimeters above the cabinet.
Painted in white, you might have a white line between the 2 alu frames, which would be very far from discrete.
IMHO, it would downgrade the overall look of the setup.
Yann.
Ne pas s'en faire et boire frais!
Mon install en images: cliquez sur mon profil, au dessus de mon avatar - Puis "My files" tout en bas.
Pictures of my setup: click on my nickname, above my avatar. Then "my files" at the bottom of the page.