@dfjama: Sorry I don’t get it which blue image your are talking about. Are you talking about the Featured Slider. If you are talking about Featured Slider then you can check this theme instructions page at http://catchthemes.com/theme-instructions/catch-kathmandu/.
You will see default slider in the Catch Kathmandu Free Theme. So you can replace that with either Featured Post Slider or Featured Category Slider to highlight your post.
1. First you need to create post and add in Featured Image in your post. As this post image, title and excerpt content in used in slider.
2. Then you need to go to “Appearance => Theme Options => Featured Slider => Featured Post Slider” and add in your Post ID, which will replace your default demo slider images.
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