Blair's only slightly orange.
Blair is in trouble, but not big, not yet.
Conservative backing is OK, but if all the Labour MPs went against, he'd lose a no-confidence vote and thus trigger an election. This will not happen.
His own party could not remove him as Prime Minister - not yet anyway.
I think the only time a challenge may be made is at the party conference - not until late summer.
Even with the likelihood of a successful short war, Blair could be in trouble afterwards for striding against public and party opinion.
cheers,
Tony