Few suggestions for new features

[andrejpan]

As a rosmon users in ROS 1, we like to have our logs in colours.

Could an option be added to change the background colour for individual nodes, something similar to what is shown below?

Second, how is the situation in capturing non rclpy/rclcpp outputs to the SWRI console? For example, serial communication libraries/runtime dependencies are usually not based on ROS 2. Would it be possible to capture their output as well, as it is somehow implemented in rosmon?

Thank you for putting effort into providing this software! Best, Andrej