Sumthing Old,sumthing New,sumthing Borrowed,something Blue..is this True??

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I planning to settledown nxt year..been reading about wedding preparations and i came accross this sayings.."Something Old,something New,something Borrowed n something blue.. what exactly is the relation of this sayings to a wedding..do we have to follow it literally??..just want to have a perfect wedding ceremony n reception.. i wonder wat this cliche have to do with it .. how do i start planning for my wedding..m just too excited about it..my fiance gave me the blanket authority to decide however i want it..some gud suggestions will surely be highly appreciated.. what is a nice motiff color etc..