Lilies and achillea

I don't believe in all this gardening stuff about you cannot put this colour with that colour. Also I dont believe in plants being unfashionable so you shouldn't have them in your garden. Over the last week I have heard that fuchsia, dahlias and begonia were all very unfashionable but now they are fashionable and desirable. I believe if a plant is suitable for the space and looks beautiful then it is good enough for me to have in my garden.
I have photographed the cerise pink and the vibrant orange. Even I am not sure about this. What do you think too clashing or ok.