make actionbar bg color a bit lighter in dark theme
make actionbar bg color a bit lighter in dark theme

tobiasge/cgeo,rsudev/c-geo-opensource,rsudev/c-geo-opensource,tobiasge/cgeo,tobiasge/cgeo,cgeo/cgeo,cgeo/cgeo,cgeo/cgeo,cgeo/cgeo,rsudev/c-geo-opensource