How about 4140? It'd be just as heavy, and probably as nice.
But, well, it'll be a brick either way.


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As far as anodizing goes, you can go two ways:
First, backyard anodizing - Easy to do with a 12V battery charger, plastic bowl, sulfuric acid, and a pan of Rit clothing dye for coloring the part. Works great, provided the part is clean and not corroded before it goes into the sulfuric acid.

Second, oxidizing/"cooking" the part - I've found, through extensive testing, that you can make your 60- and 70- series aluminums turn a light brown to almost black by simply dumping the part in a boiling pan of water for a couple of hours. With this method, the hotter the better - A pressure cooker would probably be the way to go, or use a pan, lid and weight.
It looks cool, is incredibly simple to do, and is worth a shot.