the first 4 images do not show for me for some reason, but the last does, the one of the theme manager in admincp...see part of the issue there, you have 2 1.css check template.php and css files to make sure they are pointing right, it should show 1.css as default, next would be 2.css or what ever the template is supposed to be, you may need make changes in the dark theme template.php to reflect.
looking at darkmasters theme he designed it to be set as 1 so if you want to use it you either need get rid of the other template or go through darkmasters template.php and replace the 1 with a 2 and rename 1.css to 2.css, look for line like
templates/1/
and change to
templates/2/
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