Hi @Chaoscontrol,
Thank you for your reply.
By default the sparkling theme that you are using displays full post content on the post listing home page, i think you have changed this by using the solution posted in the following reply.
https://colorlibsupport.com/t/read-more-is-not-working/#post-11403
If this is the case then you can display full sticky post content on the post listing home page by changing that code as following.
<?php if( is_home() && !is_sticky() ){ the_excerpt(); }else{ the_content(); } ?>
To change the background color of sticky posts on post listing page so that they will display differently try adding the following CSS code in the Custom CSS Theme options displayed on the below path in your admin area.
Admin Area -> Appearance -> Theme Options -> Other Tab -> Custom CSS
body.blog .type-post.sticky .post-inner-content {
background-color: #dadada;
}
Best Regards,
Vinod Dalvi