Need inventory integrated with different swatches

I have a bundle product which needs three colors to be selected by the user. I have added three dropdowns to select the colors, but it seems like they are not integrated properly. I am not getting preview of two drop boxes, i am not sure whether they are connected with inventory or not and eventually i want to change them to swatches with custom pattern to pick from. If you can guide me through it would be of great help. Thanks