I'm new to blender so this might be a noob question! I've been trying to weight paint as the automatic weighting was affecting the wrong parts of my mesh, however, nothing I'm doing seems to be changing anything! I've darkened all the areas I don't want my bone to affect and brightened the areas I do but when I go back into pose mode it's as if I've done nothing.
For example, here I painted the foot and darkened the other.
And here is the result - as if the painting hasn't been applied, am I missing something?