Can I change the background color for the "quote", ''note", "important" etc blocks?

[mentaloid]

Should be possible by adding to file custom.css something like these:

blockquote {
  background-color: lightblue;
}

.admonitionblock.caution {
  background-color: orange;
}

.admonitionblock.important {
  background-color: red;
}

.admonitionblock.note {
  background-color: blue;
}

.admonitionblock.tip {
  background-color: blue;
}

.admonitionblock.warning {
  background-color: orange;
}