I don't know if those specific colors mixed together would work but I think you could give it a try if you have recently bought something in a clear plastic wrap(box). Mix your colors as you planned and apply to the clear plastic and see how it works. If it doesn't work, you haven't lost anything except a little paint but gained a little knowledge.
I usually keep a few of the clear plastic wraps when I buy AA and AAA batteries. Keep them under the bench for just that same purpose. It's just like keeping an old plane or car wreck for a paint mule to test on.
Hope that it works for you.
Stay safe.
Jim 
Main WIP:
On the Bench: Artesania Latina (aka) Artists in the Latrine 1/75 Bluenose II
I keep hitting "escape", but I'm still here.