Leaders tipet etc

[FemaleDuck]

So, ive been using a floating line which is quite light and it has a braided leader, then i add around 18" inches of tippet material. Today we had no tippet with us but just regular mono it had a sort of brownish colour to it compared to what i usually use whihc is almost clear. The stuff i was using was 6lb line.

Would that make a difference? could the fish see that?

Ive noticed 1 of my mates generaly doesnt even use a leader and ust uses either tipet matieral or mono.