Anodizing never lasted long anyway. The latest Ruger alloy grip frames are powder coated and look better to me plus are more durable. Check Brownell's or look for the following that you can bake on in your oven.
Moly-Resin: sprayed on and baked.
If you don't want to bake it on, Brownells Aluma Hyde II or DuraCoat are moderately good choices.
Dupli-Color High heat 1200 degrees ceramic paint gives good results. At about $6 a can it is a fairly good substitute for the specialty paints at $20 a can. One thing about the ceramic infused paints such as this and Wheeler Cerama-Coat is that they only require a clean surface for application (Wheeler Cerama Coat instructions state: "Blued or Parkerized steel and anodized aluminum can be coated as is. However, if any red rust, corrosion, or oxidation is present, it must be removed in order to assure proper adhesion of Cerama-Coat and to protect the substrate from further deterioration. Light surface rust can be removed using fine steel wool and a penetrating oil or solvent. Severely corroded surfaces should be stripped using a chemical stripper and/or a mechanical means such as a bead or sand blaster, a buffing or sanding wheel, or by hand sanding.")
Other products worth a look are:
Gun Kote
Norrell Moly-Resin
Cerakote
BTW: Paints have varying degrees of resistance to the various chemicals found in cleaning/ lubricating products. It best to limit (or avoid) exposure time to them. It would probably best to do a test piece and expose it to the products you use.
