I created a new shape layer and then used the Rectangle Tool to draw a box, but when it is on top of a movie clip there is some transparency even though the opacity is set to 100% (also within the Comp as well). I checked the Blending Mode options for the Comp and everything within it and they're all set to Normal.
Can anyone tell me why it's not a solid colour?
Check the opacity of the ill in the shape layer group itself, not just the layer opacity.
Ahhh finally found the area you were talking about and that did the trick. Thanks.