Theme DAWN. Email signup change placeholder text and separate CTA (call to action).

[habamako]

Hi,

I'm using Dawn theme. I want to (i) change the placeholder text and (ii) create a separate CTA for email signup.
Example of what I want to achieve:

I managed to change the background color with this code snippet:
.newsletter-form__field-wrapper .field__input {
background: #f9a03f !important;
border: 0.1rem solid #f9a03f !important;
}
.newsletter-form__field-wrapper .field:before,
.newsletter-form__field-wrapper .field:after {
box-shadow: none !important;
}

I tried to adjust the theme.liquid and newsletter.liquid - but I'm not get the results I want.

I would appreciate some help:)