does the fan of this cooler is also Rgb?if not, can i replace it a compatible Rgb fan?
no, and yes
can u suggest what fan that also sync its color?
https://pcpartpicker.com/product/w7RFf7/nzxt-aer-rgb120-614-cfm-120mm-fan-rf-ar120-b1 these will work great, but you might have to use a separate program to play with them
edit: they may both use the same program