Basically I was gonna put some tin foil or paper around my grow area to reflect the light. then i realised that the little box i have my plants in is actually blue....would this mean more blue light is being reflected thus being good for vegetative growth. if so is the effect so minimal im better off using foil anyway?
No and forget foil. Just paint it flat white which is as good as mylar. Something to ponder...the reason why your box is blue is because its absorbing all colors of the spectrum but blue is reflecting back. So your eyes perceive it as blue but is it really blue? Very odd.