php - Array - Add value depending on other value

I would like to add values to an array, depending on other values alrdy in the array.

My script:

    $today = date("Ymd");
    $finalDate = date('Ymd', strtotime('+2 days'));

    foreach ($arr as $key => $value) {
        if ($value['DTSTART'] <= $finalDate){
            $values[] = array(
                'day' => $value['DTSTART'],
                'type' => $value['SUMMARY;LANGUAGE=en']
            );
        }
    }
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Type is something like this: Non-recyclable waste, Bio-waste, etc.

I want to add colors to the array depending on the waste type. I tried it like this, but it adds another 'sub-array'.

foreach ($arr as $key => $value) {
        if ($value['DTSTART'] <= $finalDate){
            $values[] = array(
                'day' => $value['DTSTART'],
                'type' => $value['SUMMARY;LANGUAGE=en']
            );
            
            switch ($value['SUMMARY;LANGUAGE=en']) {
              case "Non-recyclable waste":
                $values[] = array(
                    'color' => 'success'    
                );
                break;
              case "Bio-waste":
                $values[] = array(
                    'color' => 'success'    
                );
                break;
            }
        }
    }
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// Edit: The Input array:

Array ( [0] => Array ( [DTSTART] => 20210712 [DTEND] => 20210713 [TRANSP] => TRANSPARENT [LOCATION;LANGUAGE=en] => streetname [UID] => uid [DTSTAMP] => 20210707T015623Z [DESCRIPTION;LANGUAGE=en] => description [SUMMARY;LANGUAGE=de] => Bio-waste [PRIORITY] => 9 [CLASS] => PUBLIC [STATUS] => CONFIRMED ) [1] => Array ( [DTSTART] => 20210726 [DTEND] => 20210727 [TRANSP] => TRANSPARENT [LOCATION;LANGUAGE=en] => street [UID] => uid [DTSTAMP] => 20210707T015623Z [DESCRIPTION;LANGUAGE=en] => description [SUMMARY;LANGUAGE=en] => Non-recyclable waste [PRIORITY] => 9 [CLASS] => PUBLIC [STATUS] => CONFIRMED )
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