Okay, I'm attempting to color my linework, as in, color the ACTUAL LINES. You know, to reduce the harshness of the linework when I fill in the color.

Anyway, the way I do this is select all the lines with the Channel option, then use Apply Mask so only the lines are not masked out. But for some reason, why I apply the mask on the lines, the mask is not 100% opaque. So when I color on the layer, the color shows through slightly in the places that aren't linework.

Every time I make a layer mask, the mask in 100% opaque, but not in this case. I'm not sure why this is happening. I attached an image, because it's hard for me to explain in words. Note the opacity of the mask and the outcome when I try to color the linework.

Thanks for the help.