Sylvania makes silver star bulbs for your other fixtures, not just your head lamps and such. I got a set in my reverse lights, but considered the hid route.
I dont know about your country, but here when you signal you are going to move. You know, use your turn signal or reverse lights people will block you. First thing I do when I get in my car and need to back out I start up, shift to reverse and hold the brake while I buckle up and get ready to go.
Its rather fun watching the sudden flurry of vehicles and people who walk or drive behind me while I am just getting ready.
The brighter lamps has made this flurry of behavior worst for a few minutes, then all the people leave and I really back out.