The default colors of the console have been improved in the Fall Creators Update. The blue color was barely readable before that update:
At the same time, Microsoft has released a new tool to apply a custom color scheme. You can download the zip file on GitHub: https://github.com/Microsoft/console/releases. Then, extract the archive and open a command prompt in this folder. You can now quickly change the color scheme using this command line:
colortool.exe -b campbell
There are multiple theme included:
For instance, solarized_dark:
You can also download custom theme on internet. Put the
.itermcolors files in the theme directory and use
colortool.exe -b <filename> to use them. You'll find lots of
.itermcolors files on GitHub, for instance, iTerm2-Color-Schemes or iterm-colors.
Here's the 2 announcements from Microsoft:
You'll also find useful tips about the console in the following post.