this official skin lets you change the "key colour" so just use the code from that, change the #900 to what you want and it should target everything that uses it. There's also this one that lets you change all the colours.
Other options:
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this official skin lets you change the "key colour" so just use the code from that, change the #900 to what you want and it should target everything that uses it. There's also this one that lets you change all the colours.