How to change the background of a button to transparent and the button color itself

I am trying out Shopify from Wordpress and am having some trouble I never thought I would have. I have an image section that allows three blocks. One of those blocks is a button. That button has a big 'ol white background. My first question is: How do I make that white transparent? I see no settings for this. Just basic settings. The second question is how do I change the color of the button to a color of my choice?

I have added an Image of the issue in question.

Thank you

I guess the image didn’t take.

@SvenO
Welcome to Shopify.
You can find some options in Theme Setting >> Color.
You can also change the color using CSS Code.
Please share your Store URL.

Not really helpful since I don’t know where theme settings are, but because I have to know CSS, you just helped me make my decision to dump Shopify.

@SvenO

If you have liquid knowledge then you can add settings of color for buttons

{
            "type": "color",
            "id": "button_bg_color",
            "label": "Background color",
            "default": "#ffffff"
           },

. Else you can add CSS for color and background color.

If you still have issues please take help of a developer so theme can be changed according to your requirements.

Shopify is the first choice of all merchants. Please try it you will like it.