I'll be honest, I haven't been following the different shades of colors in the Google Toolbar. But Gabs, someone I trust started a thread at Search Engine Roundtable Forums noting that new pages now have a grey color in the Google PageRank Toolbar score.
In the past, Gabs explains, that new pages normally received a white bar and not a grey bar.
In the past, a grey score in the toolbar meant keep away, while white meant the page was not yet indexed but would be.
I have taken a screen capture of the new forum thread (new URL, so not in Google's index yet) showing the Google Toolbar PageRank score from the Firefox toolbar.
Notice that the color is grey and not white.
I doubt this will have any impact on rankings, but it possibly may impact people's link exchange requests. :)
Forum discussion at Search Engine Roundtable Forums.
Update: More reports of this at DigitalPoint Forums.