Editing programs may help a little bit but the colours will not pop and you still don't have much red to work with so your shots will always tend towards blue. Editing programs can be magical, but creating something that isn't there, while possible, is incredibly time consuming and usually not worth the hassle. You also move from "photograph" to "digital art" - which may or may not suit you.
Tips for getting the most from a camera that makes all the decisions for you:
1) Get close. Find out what your minimum focus distance is and shoot from there.
2) Have reasonable expectations. Go ahead and shoot subject outside the range of your internal flash, but accept that they will be shades of blue.
3) Get the existing light to work with you. Make sure to shoot on sunny days. Check where the light is coming from. You want it on your subject, not being blocked by you or your camera.
4) Stay shallow. Light is eaten up by depth very quickly so the shallower you can stay, the better.
5) Lay hands on the new "auto magic filter". The results can be very nice. The colours will not, in general, pop like they would if you had a light source, but they are much more pleasing to most people than simply shooting without.
6) Check out an external strobe.
7) Buy a camera with full manual controls - there is a list to get you started if you follow the pink link in my sig. You don't have to spend a fortune to get much more pleasing results. Use your current camera as your on land/backup.
HTH