To complement, use colors that already exist on your site, but don’t match the background and borders exactly where the Google ads Adsense are placed. To contrast, choose colors that stand out against the background of your site. Contrasting is recommended only for sites with dark background, so we suggest using an ad style with white background, white borders, and blue titles. By making these changes, you’ll be making your ads more visible to users.
If the Google AdSense crawler hasn’t ever visited your site, it may take up to 48 hours or more before the crawler visits and gathers content from that page. In the meantime, you may see that ads are displayed as transparent boxes or contain any alternative ad or colour specified in the ad code or ads that are only slightly relevant.
Select the Unreviewed tab to see the ads that have appeared on your site in the last 30 days. To ensure that you’re always reviewing the most important ads first, ads are ranked according to the number of impressions that they’ve received. Remember that ads must have received at least a small number of impressions to be eligible for review.