The Unit 731 is a modded sheet of vinyl....
The lights on the fans hmmmm.... you get different fans with different lights these days... you'll just need to google around for them....
http://www.newegg.com/Product/Product.aspx?Item=N82E16835494004
The wiring is made to order or then made with covers available from different online stores....
http://www.newegg.com/Cable-Management/SubCategory/ID-95
and of course others....
The hoses and the attachments too come from online stores which sell water cooling accessories.... and the manufacturers themselves.....
http://www.newegg.com/Water-Liquid-Cooling/SubCategory/ID-575/Page-3
try browsing through this
http://www.overclock.net/g/
Try this site.... you might get everything that you want from here
http://www.frozencpu.com/cat/l1/g6/Lighting.html?id=LFActPeq&mv_pc=27014&gclid=CKTJkNCfm7sCFcQb4godGn4A4A