Unusual Colour Combinations

I have lots of cordylines in my garden. They are a great addition to any bed because the colours change depending on the amount of sun that they get. Nature does the most amazing colour pairing. Look closely at the pink edge of this foliage. Unusual combination of red and pink to say the least.
My miniature pineapple has a new one again. I just keep putting the tops back in the ground and am slowly building up a small collection. I've never tried to eat them. I'm sure they're just decorative.This I did eat and it was delicious. Remember we saw it as a flower?
I adore begonias. Unfortunately the feeling is not mutual. I have very clayey soil and the hybrid begonias are not as hardy as their common cousins like the bread and cheese. This particular one is quite hardy and I just love the dots on the leaves.

Chancy, please help. This is my new bed. I paired them for the colours but have no idea what either one is called. Aren't the colours lovely?