Help With Colors

I'm working on a revamped design for Belle (for reasons), and I'm struggling with her livery at the moment.

I wanted something that'd both mesh better with the SSRC liveries/colors, while also being a designated "steam" livery of sorts (as opposed to road and air liveries). If Harold is white with red accents (and maybe gold idk), Flynn and other road might be red with white and gold, and then Belle could be... something else, with red, white, gold, and a different main color.

These are the four I have right now, any thoughts or suggestions are much appreciated.

* The blue is closest to her original, but more muted. Red and white lining because SSRC. * The two dark greys are what I'm leaning towards right now, not sure about the stripes and accents. The near-black feels on-brand for a steam locomotive, and there are some emergency response vehicles that are painted black as well. It's not as high-vis, but she's on tracks and wouldn't have to worry about that as much anyway. * The red is more "classic fire engine", but it feels kinda eh.

There might also be a better way to do the stripes? Something less classic steam and more emergency vehicle?

On a similar note, any idea what lamp arrangement makes the most sense? I've got them set to express right now, but I wonder if express freight no stops would make more sense.

(Also yes I changed her basis to a GWR 4300, the logic is a little wonky but I figured if the Southern Pacific T-1s were tender engines, having her be a mixed traffic tender engine would work well enough and give her some versatility, even if it knocks her push-pull capacity.)

Edit: Thanks for the input y'all! Much appreciated.