sim 4 - all the sims are the same color

@jules11132  Before saying anything else, you should know that the legacy edition of Origin that supports Vista is about to be sunset (tomorrow, as it happens).  Here's the announcement:

https://answers.ea.com/t5/General-Discussion-and-Feedback/Origin-Legacy-Client-Sunset/td-p/8563513

While you may be able to play offline for a while, your version of Origin may not work properly if you try to login while your laptop has an active internet connection:  Origin may try to update and fail, or it may just error out and never work again.  So starting tomorrow, please disable wifi or disconnect the ethernet cord before opening Origin or trying to launch Sims 4.  And don't clear Origin's cache or otherwise wipe its data, since you'd then need an active connection to verify your account details the next time you tried to sign in.

As for the game issues, playing with the settings isn't a bad idea.  If you don't get anywhere with that, you can move your Sims 4 game folder out of Documents\Electronic Arts and onto your desktop and try again.  Your saves and other content will be in the old folder, but you can mess with the graphics settings in the new folder to see whether you can make the sims look any better.  If so, you can move your saves over to the new folder when you're done.  Switching between fullscreen and windowed (or windowed borderless) is worth trying again too.

However, there's a good chance none of this will work.  Your computer's graphics card driver is from 2007, and in some ways, it's surprising that the driver works with Sims 4 at all.  I did find mention of a newer driver, from 2009, for your model laptop.  However, it's from a third-party site, not Toshiba, so it's not guaranteed to work.  (I'd also want to ask around about how trustworthy various driver archive sites are before downloading anything.)  It's also not guaranteed to be an improvement; updating the driver could easily make things worse, up to and including preventing you from playing at all.

Newer drivers are designed to work with newer operating systems, and trying to install one in Vista is even more of a risk.  It's not something I'd want to recommend unless you were capable of and comfortable with restoring your system,  in case something went wrong.

If you do want to try a newer driver though, let me know, and I'll ask for a second opinion on what download would be the most likely to help, and how you should go about installing it.