Welcome to the forum , nice to have someone new here !
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First to answer your question ;
The only colour settings available are Natural: sRGB , Natural+: sRGB and Embed Adobe RGB .
The sRGB settings that you normally use . The difference between the Natural and Natural + is the "+" is slightly richer .
If your shooting JPEG theses can be further tweaked in the Digital FX setting in the menu .
Unlike the D5d there are no other JPEG options ( other than size) and any conversions or processing are to be done on the PC .
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I still use my D7d from time to time as I like the output and the usability of the camera .
For web use and small prints the 6 megapixel is more than adequate still .
With al my cameras I only shoot RAW to get the best out of the sensor and process in Adobe Lightroom where the camera gives very nice results .
I have the camera set to RAW + Jpeg though as it's the only way to zoom in on an image to review it on the LCD . Shooting in RAW only doesn't allow this .
It takes a bit of space up on the memory card , but at 6 megapixel a JPEG doesn't use much space .
On importing to my PC only the RAW files are imported .
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If you haven't already , read the review here ; http://www.dpreview.com/reviews/konicaminolta7d
If you don't own the user manual it can be downloaded free from here ;
http://www.konicaminoltasupport.com/Owners-Manual.3086.0.html?&L=0
Also , the final firmware for this camera is 1.10 .
This made several big improvements to the camera , check if yours has the latest version .
If you need it you can download it off the Minolta website here ;
http://www.konicaminoltasupport.com/Firmware.3362.0.html?&L=0%2Finurl%3A%22%2Findex.php
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Enjoy your camera and please feel free to share your results here .
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Regards , Neil .