Complex sentence: Some diplomatic services abroad still use the light blue (reflex blue) version of the flag.Both the dark and light versions are equally as common, however the light version (i.e. the main version used by Wikipedia) is far more common on digital displays.
Split into simpler sentences: Some diplomatic services abroad still use the light blue (reflex blue) version of the flag. While the dark and light versions of actual flags are used equally, the light version (i.e. the main version used by Wikipedia) is far more common on digital displays.