What switches and key caps should I get? - eviltoast

Hi all, I have a quick and possibly very simple question. I have a keychron V6 with red switches being delivered to me tomorrow. I just want to know what switches and keycaps will fit this keyboard? This is my very first mechanical/swappable keyboard and I know nothing about it. I want to try other switches, mainly brown, blue and yellow. Also want to have a different look keycaps every now and then. I’ve searched on their site, but I had no idea which ones to choose. lol Thanks in advance.