its time you used photoshop to correct the error (did you do it?)
i did it for one of your pictures. not the best. finished in 5 mins. corrected the levels abit, used Colour Balance to adjust the colours, since blue is too much i took it out, i wasnt there when you took it, so i dont know if the background was really giving a blue tint when you took it. so you will have to make your own judgement. but oh wells... this is just a little bit of what i think it may look like..
5 min job
bahs come to think of it... still a tad too blue.. well u figure it out yea?
keep trying! most photos still have the bluish tint, but better.
erm play around with all the colours, mid tones, highlights and shadows, try using Levels too