Chase a missed deadline without creating conflict

A colleague has missed a deadline and you need it done without souring things. This rewrites your follow-up three ways, assertive that makes the consequences and a new deadline clear, diplomatic that acknowledges the pressure they are under, and a middle version, so you can chase in the register the situation needs.

A colleague has missed a deadline and I need to follow up in a way that gets results without damaging the relationship.

Colleague's role: {COLLEAGUE_ROLE}
What was due and when: {DELIVERABLE_AND_DEADLINE}
Impact of the delay: {DELAY_IMPACT}
My draft message: {MESSAGE_DRAFT}

Rewrite this message in three versions:
1. Assertive: clear that the delay has consequences, sets a firm new deadline
2. Diplomatic: acknowledges they may have had reasons, still makes the urgency clear
3. Neutral: states the facts, asks for an update and a new date without editorialising

Label each version clearly. Keep all three under 150 words each. End with one sentence on which tone to use depending on history with this person.