Pyracantha for a hedge near wall

I like privet, but whilst out-and-about, making special effort to observe what folks were using as hedges, I noticed a nice-looking plant with orange berries. I've since discovered that I was observing pyracantha.  I see you can obtain with orange, red or yellow berries.  I'm not sure if it's okay to mix these in a hedge.

My stepped wall (I live on a slope) is adjacent to the public pavement, and is about 18" high.

Seems a good choice as a hedge to give some sort of privacy and a sense of a barrier between my front garden and the street.  I think it will need constant pruning. I want it to form a dense hedge, to overhang the 18" high wall, which is about 8" wide, and then rise to about 3' 6" to 4'.

Not sure how far from the wall it should be planted. I'm guessing about 6". Hopefully not a danger to children.

A good strong-growing plant. I've got several round the garden and they can grow very high. White blossom attracts the insects and berries look wonderful in the Autumn before the birds get them. And it's evergreen too.
They do have nasty long thorns but perhaps you can find a thornless one for next to the pavement. (Although it will stop anyone trying to get through!!!)

You can get orange, yellow (or light orange) and red berries. But, I do not suppose you can get each with same leaves, etc.  Nice if you could. I must check that out.

Also, holly would be good as well, if folks don't tend to steal it at Christmastime!

I'm checking out thornless pyracantha.  Might be a good choice. ( I see Pyracantha ‘Watereri’ is mostly thornless).

You can get orange, yellow (or light orange) and red berries. But, I do not suppose you can get each with same leaves, etc.  Nice if you could. I must check that out.

I only want nature to be accommodating, by presenting me a plant with exactly the same leaves and berries, but different colours on the berries. :c)

I don't think it is possible though with pyrocantha. Unless someone knows different.

I always thought the leaves were the same on all the varieties,  but to be sure why not pop along to a garden centre and have a look, if you are really worried.

We have three slightly different coloured berries - the leaves are very similar only difference is a slight variation in depth of green on ours. (Is there a varigated leaf? Not sure - probably not)

The thorns are very sharp and you really would need to keep a close check on it. Trim back to in-line with the boundary wall so no one is stabbed or scratched as they walk by. (If they attempt to clamber over - though luck on them!) Prune back after flowering avoiding newly forming berries.

Older plants might attract a fungus (a sort of grey mold) on the stems. I'm not sure if it's too wet / dry or hot that causes it but ours have grown through this. They are as tough as old rope and can be cut back very hard if needed.

Fire Thorn is a more natural form I believe and bright red as the name suggests.
                                                                                                  How to grow firethorn link

Birds love the berries.