yes i think my shelf is darker than that, i will look into this more and as most of you say maybe best thing to do is use my existing shelf. i may leave this until after christmas as i need to organise myself to find time to do this.
Sparticus - i would almost use it everytime it were sunny winter or summer its for my Daughter and my baby (due March). facing backwards into the sun its easier to have a blind ready at the press of a switch.