The mechanic in the Britbike shop in Edinburgh (West Pier) used to fix crankcase leaks with a wipe of acetone and a light smear of araldite.
His argument was that people wanted a quick, cheap fix. Nobody wanted a complete strip-down done. He was absolutely right.
You've fixed a leak and done no damage John, so it's not a bodge...in fact its genius. If you'd used lime green paint and the entire can I might feel differently.
Cheers,
Iain