Maybe this one ? Or this one ? Also this. And this one ?

I have a transparent one from ESR on my new mini 6, it fits all your criterias except color. It fits the device very well, is a tight fit, agréable to the touch and as I don’t have a pencil I didn’t want anything pencil related. It’s perfect but it’s transparent which you might not like, however, I find it really cool to still be able to see the (beautiful in my eyes) pink color of my mini :)

https://www.amazon.com/dp/B099RZ72N5?ref_=cm_sw_r_cp_ud_dp_XJZ34RT5GA0M3RV02FFD this + a tempered glass screen protector. Has been beyond perfect for me