use the high contrast image at the top

README.md

@@ -6,7 +6,7 @@ Powerlevel10k is a theme for Zsh. It emphasizes [speed](#uncompromising-performa
 [flexibility](#extremely-customizable) and [out-of-the-box experience](#configuration-wizard).
 
 ![Powerlevel10k](
-  https://raw.githubusercontent.com/romkatv/powerlevel10k-media/master/prompt-styles.png)
+https://raw.githubusercontent.com/romkatv/powerlevel10k-media/master/prompt-styles-high-contrast.png)
 
 To see what Powerlevel10k is about, scroll through [features](#features).