Apply new theme with React

[zergote]

Hey, guys,

When you try to dynamically change the theme of the graph, fonts and line colors are not loaded correctly. For example, initially there is the white theme and its colors look good, when changing to the dark theme, it is also loaded correctly, but when trying to return to the white theme it no longer does.

https://codesandbox.io/s/zkxq36531p