The color looks fine. But I think you have way too much water in there and most likely caused by the fact you used brine rather than straight salt. I have made my own and after chopping all of the cabbage I began to put it into the jar. After building an inch thick layer of cabbage, I put some salt on top and then put another inch layer of cabbage and did this util the jar was full. You need to use fresh cabbage which is naturally full of water. The salt added helps to draw this water out and create a solution with which the cabbage can ferment in and create sauerkraut.
The important part is that the liquid should not be slimy or foul smelling. It will look/smell weird but but not of decay or spoilage. Second, you want some room at the top of the jar but do not pack it all the way full. As the cabbage ferments due to bacterial action, it producers carbon dioxide which needs to bubble out. It looks like that has already started in your batch since the liquid looks bubbly. If you pack it full, the jar will surely overflow because of expansion. You need an airlock type of device that will allow excess Co2 pressure out but not allow air back in. There are special fermentation crocks that accomplish this purpose if you want to spend the money. I drilled a hole through a mason jar lid, fitted it with a rubber grommet and inserted a beermaker/winemaker airlock. Others may use a cheesecloth. Anyway its important that airborne contaminants (bacteria, mold etc...) be kept away from the food which will spend several weeks at room temperature fermenting. I like my kraut extra sour and left it outside for 2 months before declaring it finished.
To those who advise the OP to just buy store bought kraut, it is not the same thing. Grocery store sauerkraut is heat sterilized which destroys all of the helpful bacteria and enzyme activity that has been purposefully cultivated. The taste also suffers as it now effectively cooked kraut, not raw. Real sauerkraut is classified as a legit pro-biotic with active cultures that aid in health and digestion. And its easy to make, cabbage and salt are cheap too. Unless your store sells the real deal, you wont find this sauerkraut sold unless you make it yourself.