Subject: How do astronomer measure the distance of a star from earth.

As i know, they look at the red shift or blue shift and the using some 
Hubble constant and they could find the distance. But as i know, different 
stars with different temperature and different chemical compound would 
emit a different color that might interfere the "color shifting" of a star 
due to doppler effect. Is there a way to counter this or all there while, 
astronomer are doing the wrong thing? 

Re: How do astronomer measure the distance of a star from earth.