This has been discussed a little before.
I at least want them to use the Classic designs as a starting point in terms of color palettes.
If they start with red and blue on Stratos, but during the design process they come up with a cool redesign of him that just happens to work better in more muted tones, then I'd be cool with that.
But chucking out the bright colors out of fear that it won't be "cool" enough, anything like that I am 100% opposed to.
Just saying that I'd be shocked if they ever had Hugh Jackman even do a test with orange and brown duds, to say nothing of the yellow and blues.