I just looked up 'cerakoting' - it's an epoxy/ceramic finish and is considered very durable. You can get it in over 100 colours too - you got lots of choices there
As mentioned - you could just use it as is, it never really worried me if an old gun actually looked like an old gun - but that blueing loss is pretty unattractive as it doesn't appear to have worn off, it seems almost to have flaked off like a badly applied paint due to mistreatment. It reminds me of a 'bad hair' day and I'd hide it until it can be sorted - and I'd even attempt a 'cold blue' in the odd chance that you may improve it ......... or you can shoot it like it is and not give a toss what others think ............
Trying something never really hurt - unless you're trying it from a high building ............
I dunno .............
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