Hi again,
So you’re using shortcodes in a text editor. You can use the style attribute for the inline styling of the element. It’s the same as to use in HTML elements for example:
[button type="transparent" shape="pill" size="mini" href="#example" title="Example" style="color: blue; background: red;"]Pill Button[/button]
See I’ve given the inline style to the button element by adding style="color: blue; background: red;" in the shortcode. You can do the similar for all the elements.
To see all the options in the shortcodes you can refer to the following link http://demo.theme.co/integrity-1/shortcodes/
If you would like to learn CSS, I am sharing few resources that you take a look to get started with CSS and an interesting tool that you can use to speed up the development process.
I recommend you to watch following video that will help you to get started with CSS.
https://www.youtube.com/watch?v=MFR4WXiLzpc
Sometimes it can get a bit difficult to find out the right selector to be able to write the required CSS codes. A handy tool that can help you in this is Google Chrome dev tools. I am sharing the resource that you can refer to get started with dev tools.
https://developers.google.com/web/tools/chrome-devtools/css/
https://developers.google.com/web/tools/chrome-devtools/
https://www.youtube.com/watch?v=tP_kXBJWPhQ&t=200s
Hope this helps!