usually its a thing with the aliases.
usually 'll' is aliased to 'ls -l --color'
which is why it shows it in colour (try it)
chances are, konsole isn't correctly loading one of the bash startup scripts when it loads, try adding this line to the .bashrc file in your home directory:
alias ll="ls -l --color"
anywhere should do. the end might be the best place, so you don't break anything already in there
p.s im a new zealander, we use 'colour'. and don't try and change me