No, you don't have to edit the LS_COLORS.
I don't know whether or not konsole has special features
to deal w/ colours, but for (other) emulators including
full-screen just create an alias in your ~/.bashrc
alias lc='ls --colors=always'
That way you can do lc instead of ls if you NEED colours.
Note that in scripting the colours and other special features
like added / or * may confuse the results, so aliasing ls with
the above suggestions may not be a good idea.