Sure I can compile a few. Since you asked for full plate I’m gonna limit it to European examples.
To begin with, a transitional suit of plate armor featuring a coat of plate, because these tend to be underappreciated.
Next some fabric/costume armor because that’s a look right here.
Some fluting with Maximilian armor, this one has some gilding too.
More fluting.
Now how did that get in here :9c
There are other options than fluting, like embossing…
…or acid etching.
Make it into a fucking work of art.
All-white because sometimes clean shapes is all you need.
But armor doesn’t have to be plain steel, you can blue it.
Blue and gold fit very well together.
Schwarze Reiter with their black and white armor are a classic.
Munition armor can be sexy too…
…but Greenwich armor is still the best money can buy.
And finally, accessorizing is also an option.
Hope that helped, sorry for the long post, hope I didn’t kill too many people’s data.