Previously, the default colors of background shapes was based on the
base palette colors o-color-1 to o-color-5. We generated classes for
those shapes that used the default colors, so that shapes would adapt
with the palette, so that if the user switched palettes their shapes
would still use the palette colors. While this works, shapes are meant
to connect together (no problem here) as well as with the previous or
following section's background color, but since shapes were using the
palette colors directly instead of using the *background* colors defined
by the palette, if the palette (or the user) customized any background
color, switching palette would break some shape-section connection.
Part of https://github.com/odoo/odoo/pull/68336
task-2491890
X-original-commit: 527af189eac381844280c9dbd716aa2465172f59
Samuel Degueldre
788bd52e81