CPU Fan rgb issue

[deadlyfeetshehe]

Hello! I just recently built my first pc, which is mostly black and white themed. I have a Vetroo v5 rgb cpu fan with "addressable rgb", but for some reason upon turning on my pc for the first time it stays on the color yellow (not even rainbow rgb). I have a b550m d3sh mobo and the fan has a 3 pin "ARGB connector" but since im new i had no idea where to plug this in my mobo so i just plugged it in my mobo where it says "D_LED2" (heres the layout of the mobo: https://download.gigabyte.com/FileList/Manual/mb_manual_b550m-ds3h_e.pdf on page 4)  I tried looking up how I can change the color or fix this, but to no avail.  It really makes my pc look weird with everything else being black and white... please help!