Difference between intake and exhaust valve stem seals

Hello everyone! I'm replacing a head gasket on my son's 2012 2.7L Tacoma. I got an OEM gasket set, and the valve stem seals are not marked with P/Ns - one group was in a baggie by themselves, and the others were rolling around with other seals in a bigger bag. My older manual says white spring for intake and black spring for exhaust, but I'm not seeing these colors on these parts. I've seen other posts that describe "brown" as intake and "gray" as exhaust. Please look at these pics - which ones are which? It looks to me like the bronze-colored body has a gray rubber seal, and the silver-colored body has a black rubber seal. Can anyone help and tell me which ones are which? Thanks in advance!

 

Did you remove the old one already? If not match them up.

 

Great idea! Just did that ... the intake side has a body that's bronze and a "NOK" on the top of the seal. The exhaust side has a more gray body, with no writing on the top of the seal. My replacements are: bronze body with "NOK" on top, and the others, a gray body with no writing on the top. SO ... it seems that the bronze body is the intake side; the grey body is the exhaust side. Thanks for your help!

 

They also have a very different shape to them too.