It appears you can create a sass partial (file that starts with an underscore) but I am not sure if this simply creates a compiled CSS file that overrides the full bootstrap.css file variables, which works but is not the most efficient.
It states that “Variable overrides within the same Sass file can come before or after the default variables. However, when overriding across Sass files, your overrides must come before you import Bootstrap’s Sass files.”
So you must download and import the Sass folder files and folder structure to the Styles folder. I have a _underscore on all the files.
Then the sass:
This will override (not replace) the Bootstrap Studio bootstrap.css file just like any other css file you include in styles. (It is a complete compiled custom bootstrap.css file).One could actually replace the main bootstrap.css file when project is completed or during testing after exporting. Everytime the Bootstrap version is updated you would probably want to update the sass folder to the new Bootstrap version also.
I only offer this up as a “trial” for others to test. Could not recommend it for production until further testing.
One thing I did notice is the downloaded css version of bootstrap (same version as Bootstrap Studio is using) is missing some -ms prefixes so its possible BS is running autoprefixer or some sort of postcss process on their file. Would appreciate any feedback …..