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LMH1251: Can the unused inputs be left floating?

Part Number: LMH1251

In my application, I'm using the YPbPr inputs exclusively.  I wasn't able to find any guidance on whether the RGB input pins could be left floating or whether they should (or should not!) be tied to ground.  The little "disconnected switch" triangle components in the schematic on page 2 of the datasheet seem to indicate it should be a non-issue and they can be left floating.  Also, the half-dozen boards with an LMH1251 I was able to pull up in a Google Image search showed all of them with floating pins.

Would there be any advantage (lower power consumption?) to tying the unused pins to ground instead?  Or is it perfectly normal operation to leave them floating?

More pointedly: the boards I ordered last week left them floating.  Am I going to have to make a new board revision?

Thanks!
Nicholas