Color theme of master not applying

Hi,

I am using TW 9.1. I have created a master with header blue color and a mashup in which the master is linked. When I run the mashup separately, its working fine. But when I navigate from some other mashup (with different master), the master header color is not applying it is getting replaced by white color and only if I reload the screen manually it is applying the blue color. 

How can I resolve this issue?

Thanks in advance.