need little help with my site colours.

Hi’
I got another noob problem and need some kind person to help me 🙂

I Updated my ST to 8.9.4 and everything went smoothly, But i need to change my site colours back to how they was before the update. i can pick colours in the design setup but its limited to what colours i can pick and i need a orange but there is none, so its red at the moment and it looks bad, so could anyone tell me how to use another colour please for the header backgrounds and the “Add to Cart” button.

ive added some pics to show you what i mean.

TIA