If your console has a black background, the default color theme is not very readable. Here's a special theme with bright colors and enough contrast.
It has been the default in the Windows port for some time and could be added as to the Unix version as well for users who prefer dark background colors on their console.
Examples can be seen in the WindowsInstallationGuide.
class ColorOnBlackTheme(AnsiColorTheme):
"""Color theme for black backgrounds"""
style_normal = Color.normal
style_prompt = Color.green+Color.bold
style_punct = Color.normal
style_id = Color.green
style_not_printable = Color.black+Color.bold
style_layer_name = Color.yellow+Color.bold
style_field_name = Color.cyan
style_field_value = Color.purple+Color.bold
style_emph_field_name = Color.cyan+Color.bold
style_emph_field_value = Color.red+Color.bold
style_packetlist_name = Color.black+Color.bold
style_packetlist_proto = Color.yellow+Color.bold
style_packetlist_value = Color.purple+Color.bold
style_fail = Color.red+Color.bold
style_success = Color.green
style_even = Color.black+Color.bold
style_odd = Color.grey
style_opening = Color.yellow
style_active = Color.grey+Color.bold
style_closed = Color.black+Color.bold
style_left = Color.cyan+Color.bold
style_right = Color.red+Color.bold
