Using the stylesheet prop, if I pass in custom styles for a tag, it overrides the default styles. For instance:

... stylesheet={{ h1: {color: "#333"} }} 

This works fine but removes the fontSize that I'd like to keep. Same for strong, em, u, etc. Am I doing something wrong or is there a better way of doing this? My ultimate goal is to just change the text color of all elements and it would be kind of annoying to have to restyle everything.