dark mode chat - icons to increase & decrease font size not visible

[helenvarley]

when the chat is in dark mode, the icons for increasing or decreasing the font size are not visible because they are also black. you can still use them if you know that they are there, & when you roll your cursor over them the tool-tip appears. however, audience members who don't know about this feature are unlikely to find it, and even those who do know that they can do may have trouble to find it or use it.

is it possible for, in dark mode, there to be some way to make these icons visible - without making them stand out too much? similar to how the + icon for more emoji reactions changes from black on white to white on black. the + and - signs could just be white.

very non-urgent! but i'm guessing not difficult ... ?