Lightroom 5.2 vs. Canon EOS 70D RAW

Question

Hello,
I am testing the trial version of Lightroom 5.2. My new camera is a Canon EOS 70D. When importing RAW files into Lightroom the colors of some photos are wrong. RAWs from my older 450D are fine.
For example on one photo the sky isn't blue but turquoise. When using the DNG Converter I get the same color. The sky was blue though. When opening the file in Digital Photo Professional by Canon, the sky is blue as it should be.
It happens on some other photos as well. Mostly if they have a high blue content. If in Lightroom I increase the blue content and decrease the shades it almost looks as it should.
The question now is: am I doing something wrong, do I need an update or additional plugins or is Lightroom simply interpreting the RAW wrong and will it be solved soon?
Cheers,
Sheepy

Answer 1

I managed to calibrate my monitors with a friend's hardware calibrator. The display of the photo in LR didn't change much. Still way too greenish sky.
Now I noticed that depending on the export option in LR (sRGB, aRGB, ProPhoto) I get pretty different colors in the exported JPEG files if I view them in IrfanView. None of them looks like the original that I see in LR. Funnily I noticed when writing this post that all exported images in the browser look the same - as each other and as in LR. looking at the LR-exports in LR they look the same - greenish sky. Looking at the LR-exports in DPP they look the same - blue sky. I managed to set IrfanView to enable color management with current monitor profile. Now I get the same view in LR, Irfanview and Firefox. I guess that's a plus. Furthermore I found an option in DPP to use the monitor profile - the sky looks a litlle green but there are differences to LR still.
LR sRGB
LR aRGB
LR ProPhoto
DPP aRGB with color management
Now that I managed to get the photos to look (almost) the same in all the applications that I use (FF, LR, IV being the most important) and having the monitors calibrated I can go back to my original question.
How comes that the sky looks so green although it wasn't when I shot the photo? Are there any more settings that I can make to get the colors on import better? Can I simply and with good conscience move my sliders now so that the image looks the way I like it and others will see it the same way (mainly on a website)?
Edit: Actually they only look green when writing the post. When looking at the finished post they look blue to me. Which is not what I saw in all my programs before. I am a little lost with how colors work I guess. I'd appreciate any hints.
Edit 2: When clicking on the images in this post they have the original color.