Different things can affect all layers in a layer group ( Text can be modified in layer groups) but if you want the colour the same on all layers the quickest way to do it is do 1, then duplicate that one as many times as you need.
I think you will find it may happen on a layer you do not have on top. You can only paint on the selected layer, even if you have a number of layers and the bottom one is selected, it will be the one painted on
I think you will find it may happen on a layer you do not have on top. You can only paint on the selected layer, even if you have a number of layers and the bottom one is selected, it will be the one painted on
