Slow down on this bike my friend...slow down. As FM65 mentions, the patina represents the true value. Think of yourself as a conservator. In terms of the metal components, this is not discussed very much. What is the "best way" to clean metal?. Needs a separate thread some day. Hubs and spokes and all the other plated bits get loaded up with debris and should be cleaned off. How much to remove is debate-able. Not with a badge though. No debate. The other bits, IMO, should be cleaned of all the road debris completely. Perhaps a soft toothbrush and a light solvent would work better and have less potential to scratch than a brass metal brush that I advocated above earlier... These particles contain solvents and metals that are picked up from the road, and continue over time to have destructive qualities that continues to deteriorate the metal over time. I advocate cleaning ALL the debris off of these parts to stop the deterioration for good. Then coat them with linseed-oil(wipe it completely off afterwards!!) the result is true containment of deterioration.... Some will disagree with me I know, and I would like to hear them chime in about it. In the end, most agree do as little as possible. I am a bit horrified you painted the light to be honest, this was hopefully your only mistake here so far...