312      * @param string|null $color_from
318         string|null $color_from = null,
321         return $this->individual_repository->chartIndisWithSources($color_from, $color_to);
365      * @param string|null $color_from
371         string|null $color_from = null,
374         return $this->individual_repository->chartFamsWithSources($color_from, $color_to);
794      * @param string|null $color_from
799     public function chartMedia(string|null $color_from = null, string|null $color_to = null): string  argument
801         return $this->media_repository->chartMedia($color_from, $color_to);
946      * @param string|null $color_from
951     public function statsBirth(string|null $color_from = null, string|null $color_to = null): string  argument
953         return $this->individual_repository->statsBirth($color_from, $color_to);
1043      * @param string|null $color_from
1048     public function statsDeath(string|null $color_from = null, string|null $color_to = null): string  argument
1050         return $this->individual_repository->statsDeath($color_from, $color_to);
1465      * @param string|null $color_from
1470     public function statsMarr(string|null $color_from = null, string|null $color_to = null): string  argument
1472         return $this->family_repository->statsMarr($color_from, $color_to);
1540      * @param string|null $color_from
1545     public function statsDiv(string|null $color_from = null, string|null $color_to = null): string  argument
1547         return $this->family_repository->statsDiv($color_from, $color_to);
1973      * @param string|null $color_from
1980         string|null $color_from = null,
1984         return $this->family_repository->chartLargestFamilies($color_from, $color_to, (int) $total);
2184      * @param string|null $color_from
2191         string|null $color_from = null,
2196             ->chartCommonSurnames($color_from, $color_to, (int) $number_of_surnames);
2420      * @param string|null $color_from
2427         string|null $color_from = null,
2431 …   return $this->individual_repository->chartCommonGiven($color_from, $color_to, (int) $maxtoshow);