Here is the little lad sitting with me where you can see a bit of the blue throat and chest.
He is not eating much, but boy is he purring. When I checked on him at 4am last night, he flipped over on his back and splayed his back legs, wanting a belly rub - a fine sign.
His mew is hoarse and broken, but I gather he sends voluble thanks to the Ladies of the Litter Tray.