Colorado Purchase Contract

I have a real quick question for anyone in Colorado, or anyone who has the knowledge to answer.

When you counter an offer to purchase, you (selling agent) need to submit the counter proposal and the signature page of the original contract with the countered box check and the initial space initialed. My question is, should each page of the original contract be initialed by your seller (I understand you are not signing the contract because you are countering the offer) even though you are countering the offer. If you don't initial each page doesn't that mean the contract has not been ratified? I would think that each page of the original contract would need to be initialed (not singed) to insure the seller has confirmed viewing/reading each page of the contract.

Does anyone have an answer?

thanks