SBR4 Custom interior

So I want to make either a white/cream interior for the SBR4 OR a system that maps the interior color (including the inserts and stuff) to the color selector via a "Customizable interior" option just like a similar mod for the Burnside (I probably won't do the latter). However, I have almost no modding experience and I barely know how to even port car models into Blender let alone edit things in the app. Help?

 

You can't open the SBR4's files. I can't open it. But on my brother's computer. (he has 0.15) You can open the files. I don't know it works or not.
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I wrote about this thing step by step.

 

Thanks, but what app do I require for this

 

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you need notepad++ paint.net and done

 

what about the app I should use
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oh nvm
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Is paint.net the only one? I don't wanna spend money.

 

You can use GIMP as well

 

Thank you!
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So I'm trying to make a red interior for the SBR, but I don't know how to separate the parts into 2 groups, interior and chrome. I only want the interior to be red, and the "chrome" to be gloss/chrome black. So is there a tool I can use that makes all of the interior red without clicking the parts individually? And also could you show me what pars are chrome and what parts are the interior on it?

 

Just to clarify, paint.net is free.

 

So I'm trying to make a red interior for the SBR, but I don't know how to separate the parts into 2 groups, interior and chrome. I only want the interior to be red, and the "chrome" to be gloss/chrome black. So is there a tool I can use that makes all of the interior red without clicking the parts individually? And also could you show me what pars are chrome and what parts are

The paint.net site looks jank, but I'll try.