That is a No Images Theme.
You cant actually remove the text that is displayed in the upper left. That is controlled by the encrypted gx.ini file.
You dont want to see your stack size when the hole cards cover your stack size?
When I first made a no images theme, and used a black background, like above, the dext almost completelyy disappears in teh black background image. I have since started adding a gray tab in the upper left, so that you CAN see tha HH#'s and player stack size. The gray is actually still not sufficient, and I am working on some other colors for the corner tab.
Original No Images Theme with no Stack-Tab
With a gray Stack-Tab added
Just tried using a shade of blue from the Hyper-Simple Theme.