[Greenbuilding] colored concrete

[Clarke Olsen]

     I achieved an interesting color by using blue chalk-line powder.  
Kind of like
     concrete, but more so.
     Clarke
>>
>> *I will be building a home this spring and want to use a dark colored
>> additive to the concrete for parts of the first and second floor  
>> for thermal
>> mass storage and was wondering who has used this type of system  
>> and how did
>> it turn out....
>>
>> *
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