Hi @seyedrenani,
That is great to hear that the code works well.
With regards to changing the text colour, you may use the following CSS code:
.wpgmza-marker-listing-category-filter > span{
color: #fff !important;
}
.wpgmza-marker-listing-category-filter > select{
color: #fff !important;
}
Please may you save the code into the “custom CSS” setting block, clear your browser cache and confirm if this helps?
Please note that you can only change the text colour of the options in the select dropdown and thus cannot only change the first option.
I hope this helps?
Kind Regards,
Matthew