Colour scheme advice please - photinia hedge

[Fuschiapink123]

I have a whole empty bed to plant in front of established photinia hedge.
What colour scheme would look best with its red and green background?
I had thought of yellow and whites, not pinks at all but maybe a bit of purple?
Do you think the hedge colour matters or should I just treat it as a blank backdrop?
Any ideas re colours or even plant suggestions gratefully received

I replaced a tired aucuba with a Photinia 'Red Robin', forgetting that there was a Kerria at the side. So at the moment that corner is RED, GREEN and very YELLOW. I love it! You're right to avoid pink, there's a pink/white hellebore underneath that looks terrible. Last year a purple honesty seeded itself there and that looked wrong too.

One bold approach would be to go for a dark magenta themed border with black and yellow/orange highlights: so I'm thinking things like some lovely dark-leaved dahlias, blood grass (red baron), cotinus, red phormiums or that millet that is dark in colour, and then some real yellow/orange zing (this is easier, everything from daffs to rudbeckias).

I think you can push into blue/purple with that colour scheme, but I would stick with the reddier versions and definitely not the paler/colder ones.

Here's a picture of the kind of colours I'm talking about (not for the plants, but the colours - I suspect this is an American container as I saw lots of similar ones in Philadelphia where they have the weather to grow this stuff. The millet I mentioned is in there, and you might get away with cannas if you're not too exposed).

Thank you both
I spent some time considering the hot, bold colours shovetheholly but picturing it with what house is like and other things in garden, and that as small garden, I want it to look 'together' to avoid being bitty iykwim
I decided on white lime and yellow as I love the lime in euphorbia and some lovely lime coloured grasses about too
Bought and planted now. I have prob planted too densely but probs some won't take and some will die for no apparent reason
Really looking forward to seeing it mature