Still stuck 😔 
^The result of this:
outlines ("#000000", 2)
Seriously don't know what's up. Or how to format the outlines property, anyways
Follow the examples in the docs: https://www.renpy.org/doc/html/style_properties.html#style-property-outlines
The standard is outlines [(1, "#000")] for example, which will be one outline, 1px wide, that's black.