Change background and button colours at product and cart page

[VermilionDolls]

In Dawn theme I made an image banner to the main page with different background and button colours that I use at other parts of the store. It wasn't made with colour sheme, I did it somehow individually. Then I realized that the colours of Product page's Product information section and Cart page's Template section changed to the same colours I wanted to use only for the image banner. I can't find where to change the backgroung and button colour shemes of these pages... could you please help me?

Actually, I managed to change the image banners button colour to the one I want for the rest of the store but unfortunately all the other buttons stayed the previous style 😞