the grey colorspace was shadowing the named color
added `indent` arg to font()

- setting it to a positive float sets the indentation in ems
- negative values indent all lines in the paragraph *except* the first
line by the given number of ems
- indentation is a bit on the ‘opinionated’ side: the first line in a
Text object will never be indented. Likewise any paragraph that starts
after two or more newline characters won’t be indented (i.e., use a
single \n to separate paragraphs that should be indented).