vB4 Stylevars changes in child style not having affect?

[محروم.كوم]

I have a style that I've created and have just created a child style for it. In the parent style, everything is fine and I made changes in the stylevars wherever I could instead of editing the CSS directly.

For the child style, mostly I'm changing the header section. Changes in the templates of the child work fine, but only certain stylevar changes are working. Specifically, the titleimage change worked, but the header_background and navbar_tab_bakcgound did not. Any reason for this? __DEFINE_LIKE_SHARE__