Another thing you can try once you've got your image to a good as you think you're gonna get it with the RAW Converter is to use 'Match Color'.
Open your image up in Photoshop and duplicate the layer.
With your duplicated layer selected in the menu go Image > Adjustments > Match Color to open the Match Color dialogue box. In the bottom section of the dialogue box, under Image Statistics make sure the Source Menu is set to None. (This tells Photoshop that the source and target files are the same image). In the upper section check the box beside “Neutralize”.
The result will be quite drastic but, play with the Fade control slider to tone down the adjustment.
If you play around with it enough you can get some pretty good results, especially if you use it in conjunction with layer masks. That way you can target specific areas of your image and still keep the blues blue.