http - How to make thirdparty URL secure -

hi have issue regarding ssl page.

i have set link url

https:// 

but in site ads coming with

http:// 

so changes https color green yellow in chrome. color should remain same green. should ?

it not possible remain color same because depends on add coming from. more information can check https://support.google.com/richmedia/answer/2449877?hl=en or https://security.stackexchange.com/questions/33738/are-secret-urls-secure-over-https