bfdaa9a979
The core logic of this implementation comes from the drawobject.c from 2.7x. I'm using `ts.colorGridAxisZ` for its color because of the legacy code: ``` UI_GetThemeColor3ubv(TH_GRID, col1); UI_make_axis_color(col1, col2, 'Z'); glColor3ubv(col2); ``` There is nothing stopping us from adding this to the theme though, as it should have been the case to start with.