ProLink advertises a lube that won't stain. Kinda pricy.

"Progold's MFR technology reduces friction and wear by about 50%. This revolutionary cycle lubricant works in a unique way to offer longer chain life, easier pedalling, smoother shifting and a quieter drive train. It has excellent penetration, inhibits oxidation and corrosion and works to shed contamination. It's also environmentally green and non-staining.