[SOLVED] style div overflow scollbar

[YourNameHere]

I am writing a chatroom and so far so good. Now I would like to style the scrollbar that is on the chatbox div who has overflow:auto to creat a scrollbar that is showing up as grey (ofc) and I would like to style it more closely to the rest of the site.

 

Is there a way to do this with css or does it have to be a javascript solution or is there no solution for this at all?

[YourNameHere]

<style type="text/css">
<!--
#chatbox {scrollbar-base-color: #475067}
-->
</style>