Google bought MOTO for the patents. Major portfolios like Motorola's have been going for a lot of money lately. So while I think it was a poor investment, it really depends on whether or not that huge portfolio is useful to Google.
Color has nothing comparable.
$XXM is a drop in the bucket for Apple - they could fund 10x that without blinking if the patents were deemed to be worth it. They have 10000x that in the bank already.