In my model the external wall has a "colored plaster layer". but I could not find in the BCL the I decided to make some changes on the attributes of "Gypsum' to consider the effects of "colored plaster".
Foe example the thermal absorptance, Solar absorptance, and maybe conductivity should be changed, But I do not know which numbers for them could be in somehow near to the reality. Thanks in advance for any suggestion.