For my ZEX Nitrous and Greddy S hoses, I wanted the purple hoses to stand out. Both ZEX and greddy type s have a purple theme. I wanted to embrace it.
Purchased an assortment kit on amazon
All of the coolant hoses and vacuum lines have be replaced. I went with Gates and Mazda brand hoses. Mostly 88% of the hoses are direct fit replacement while the rest was universal cut to fit.