Yeah we're not a fan of the background image either. We just edit the page, comment out the image and add a background color. Downside is you have to do this every time you update, but with SmarterStats it's not too frequent. The file is C:\SmarterTools\SmarterStats\MRS\MasterPages\Login.Master and here's the changes we add:

<!--<div class="full-screen-bg-image" style="background-image: url('<%= WebPath.VirtualAppPathNS%>/app/images/backgrounds/pexels-lukas-590022.jpg')">-->
<div class="full-screen-bg-image" style="background-color: rgb(68, 68, 68);">

This is low hanging fruit.  It also makes SmarterTools products consistent.  Thus, making our services consistent.  Please consider.