Adjust Bokeh plots for personal light/dark mode settings

[astrochun]

Bokeh plots have set colors, which is a problem for dark mode or if the local settings is in dark mode.

There are a couple of ways to go about fixing this:

1. Ensure that the stream setting is in "light" mode always
2. Figure out how to adjust bokeh colors to allow for light/dark mode

[astrochun]

As a temporary solution, we will adjust streamlit config.toml to have the bokeh color setting, which is a white-style background. streamlit config show > .streamlit/config.toml generated a default setting to use