Dear Maryna,
I partially agree with what you write.
CSS, or JS can change some property but not "any", as far as I hv tried.
yes, in the link you indicated, it's possible to change font-size, italic, bold, ... add an icon (in fact, I was looking for this one too. thk you).
however, still I would like an answer for my buttons set in an HTML component.
when a button is dragged-n-dropped from the panel to the builder, we can give this button the color of the A, B, ... F swatches part of the theme.
but when the buttons are made within an HTML block, the color of those buttons is by default set to a certain color (red in my case).
how can I change this default color ? and if possible get the color refs belonging to the theme' s swatches I picked up (namely Twitter-Boottrap) ?
It will be a pleasure to read you again 