There is totally no way to change the facebook like text ("Be the first of your friends to like this") color by trying to overwrite css in an inframe.
So the only way is to go into the template and there are currently only 2 color scheme, dark and light available for facebook like plugin.
So if you have a dark skin that color maybe dark grey background, it will hard to see the facebook like text or even you cannot see it at all.
By default vbulletin used the light scheme. to change this.
go to style manager> your style name> facebook templates> facebook_likebutton
change.
to
please note in the code change on the colorscheme=option.
So the only way is to go into the template and there are currently only 2 color scheme, dark and light available for facebook like plugin.
So if you have a dark skin that color maybe dark grey background, it will hard to see the facebook like text or even you cannot see it at all.
By default vbulletin used the light scheme. to change this.
go to style manager> your style name> facebook templates> facebook_likebutton
change.
HTML Code:
<iframe id="fb_likeframe" src="http://www.facebook.com/plugins/like.php?href={vb:raw href}&layout=standard&show_faces=false&width=450&action=like&font=tahoma&colorscheme=light&height=27" scrolling="no" frameborder="0" allowTransparency="true"></iframe>
HTML Code:
<iframe id="fb_likeframe" src="http://www.facebook.com/plugins/like.php?href={vb:raw href}&layout=standard&show_faces=false&width=450&action=like&font=tahoma&colorscheme=dark&height=27" scrolling="no" frameborder="0" allowTransparency="true"></iframe>