Hello,

Misago editor doesn't support presentational size and color by design - forum users shouldn't decide how things should look like - it is up to site designer.

But our message parser is extensive, so it is possible to create plugin that adds [color=] and [size=] bbcodes if forum administrator opts for it.

Here is documentation for plugging into message parser: misago.gitbook.io/docs/markup

Here is documentation for python-markup that Misago uses to parse messages: python-markdown.github.io/extensions/api/#extendmarkdown

You will want to define custom extend_markdown(md) looking like this:

from markdown.extensions import Extension


class MyExtension(Extension):
    def extendMarkdown(self, md, md_globals):
        # Insert instance of 'mypattern' before 'references' pattern
        md.inlinePatterns.add('mypattern', MyPattern(md), '<references')


def extend_markdown(md):
    extension = MyExtension()
    extension.extendMarkdown(md)