Very nice pix!

Since you mentioned your pix having a color cast to them...

Did you make sure to have your white balance set to the correct lighting? (ie; tungsten, cloudy, florescent)? Obvious question I know but an easy one to overlook when trying to get 'the shot'.

If you did set it correctly then there is another fairly easy way to make sure you don't have color casts.

While I'm not sure about the exact settings on the S5, I do own the S3 & S1 so it should be similar.

If you have a photo gray card, anything medium gray, or a pure white piece of cardboard you can set your custom white balance for the exact lighting you are in. This does not affect the other lighting settings and you can go back to those any time. Your custom WB will stay just as you set it until you re-set it again. This does mean that if you switch locations and want to use custom WB you will have to re-set it.

On the other S series cameras....

Once you are in the location you're going to be shooting in

Press FUNC

scroll down one, until you get to the WB settings

Scroll all the way to the right to a pix that looks like a flower opening (it does say CUSTOM also)

Have your gray or white item and hold it so it 'catches the light'. Meaning don't let the item be in the shadow. You may have to tilt it a bit to do this. Basically the same as you would use a mirror to make reflections on your walls.

Point your camera at your gray or white item that is catching the light. Make sure it fills the viewfinder. Focus is uniportant only the lighting on the card since it doesn't actually 'take' a pix that will go on your memory card.

Press SET

This will set the custom WB for that location and correct for color casts from walls, shade etc.

I have a dining room with light pink walls and frequently have nice sunlight coming in but it throws the pink cast onto whatever I'm taking a pix of. If I custom WB in the pink room then I don't have the color cast in my pix.

I once was trying to take a pix in the dentists office of a vase of flowers on the counter but their track lighting just would not color balance properly. Just over the counter was a medium gray printer under the same lights, so I custom WB using that and the flowers came out looking like they should.

This will save quite a bit of time on your cpu correcting the colors.

Any questions about it and I'll gladly help you.