tweak prompt colors to be higher-contrast

.config/starship.toml

@@ -22,7 +22,7 @@ vimcmd_symbol = "[❮](green)"
 
 [git_branch]
 format = "[$branch]($style)"
-style = "bright-black"
+style = "#888888" # was bright-black
 
 [git_status]
 format = "[[(*$conflicted$untracked$modified$staged$renamed$deleted)](218) ($ahead_behind)]($style)"
@@ -44,4 +44,4 @@ style = "yellow"
 
 [python]
 format = "[$virtualenv]($style) "
-style = "bright-black"
+style = "#888888" # was bright-black