Here is my unscientific take on it, I have a koa tenor ukulele that is overly bright. It has been bright from day one and it remains that way to this day. But the plus side is that it has great clarity and ringing all the way up the neck. For years I have tried various concoctions of strings, sometimes mix-n-match, fishing line, even changing saddle materials.
I can warm up the sound with different material strings and sometimes thicker strings but there is a catch 22 between clarity, sustain, volume... and tone. I may really like the sound on the lower frets but it loses that clarity as I play up the neck. Or I don't like the loss of the ringing sustain with some strings that give me warmth. Or it sings at the twelfth fret but too thin at the first.
I have also found that each instrument has a particular sweet spot where everything comes together. At one time I had been using Worth Brown Strong with the ukulele tuned down to Bb and they sounded pretty good but way too thin when tuned to C. Oddly enough, I now have Worth Clear Hard strings and I find them to be warmer, fuller and louder.
From all of this I have concluded, at least for my bright tenor, there is a fine line between getting just the right tension to drive the soundboard and string mass to fatten up the sound and I am not sure I won't try another set from someone else just to see if I can get it better.
I am assuming you have a myrtlewood soundboard. I imagine that it is a harder wood than cedar and therefore brighter. If Mya Moe can't give you other string recommendations, you'll just have to ask here, read reviews, and start buying strings... a lot of strings.
John