Do they show up in your adsense account after adding them through the vbulletin integrated mod?
If they do you can change the color palette there.
(I'm pretty sure they don't)
Otherwise there is an old thread that was responded to by Steve for vb 3.8:
https://www.vbulletin.com/forum/show...Google-Adsense
Go into admincp -> Styles & Templates -> Search in Templates. Search for "ad" You'll see ad_navbar_below and global_below_navbar both listed along with various other ad location templates.
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ad_navbar_below is the template you will want to change to customize the
Code:
A small 5-link advertising unit under the navigation bar. This location only shows text ads in the Low package.
Surprisingly the already established values in that template were
Code:
google_color_border = "{vb:stylevar page_bgcolor_hex}";
google_color_bg = "{vb:stylevar page_bgcolor_hex}";
google_color_link = "{vb:stylevar body_link_n_fgcolor_hex}";
google_color_text = "{vb:stylevar body_fgcolor_hex}";
google_color_url = "{vb:stylevar body_link_n_fgcolor_hex}";
So looks like you have some stylevar hunting to do. On the other hand you could always directly change that code to my last post and it will do it all the same. However the stylevars are probably safer to update, the world won't end if you get your hex color code wrong. So i'd go with the stylevars over a direct edit of the code for this route
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However
Personally I wouldn't use the vbulletin mod because of the lack of integration with your actual adsense account.
You get so much more control if you generate the code from within your adsense account. you can use custom channels and all.
What I would recommend however is altering their placement templates with your own google ad code, for the placements you want. you can pick and choose your locations rather than using the all or nothing method their integration forces with the two options