Commit [1] changed the way styles are handled. Now that the edition of
website is done in an iframe, the styles are computed inside the iframe
instead of the top window / global document element.
But for computing the gray colors, a base style defined
by `web_editor/color_palette.scss` is needed. This style is not part of
the frontend assets, so using the iframe to fetch it creates bogus gray,
which results in the feature not working.
Steps to reproduce:
- Go on the website editor
- Select the THEME tab
- At the bottom expand the gray color picker
- Use the settings
- The preview is not updated while sliding.
- The colors are not updated in the page.
This commit fixes the bug by fetching the base style from the top
window (where backend assets are present).
[1]: https://github.com/odoo/odoo/commit/212a8bfdd21269b18054200b9e2585e1c95540d6
task-2687506
Part-of: odoo/odoo#94564
Arthur Detroux (ard)
ddf2e74b4c