This was a weird one…
Repro if you’re a regular user:
- Add a search dropdown
- Go to the the breadcrumbs, Search > Submit
- In the submit background color selector, play with different color values for the base/interaction colors like you’re experimenting with different styling.
- Eventually, end up setting both to transparent – either by clicking the “link” button, or by setting them one at a time and leaving them “unlinked”.
Observed: The search button will inherit a grey BG color.

This can be super finicky to reproduce using the standard builder controls. So, the quickest way to repro this is to just add a search dropdown, then use the dev console to set both search_submit_bg_colors to transparent. I’m guessing this came from the changes you made to the color picker for Beta 4…
