It seems to me that color is not planned into the design language.
From an UX writing perspective, it’s almost fine in my opinion. I am not sure if the action intro needs a question mark, but since it’s also a dialog, questioning might be alright. Think about getting rid of the Ampersand (&), it looks cool and all, but not all users expect it in that context, since it’s mostly used in a noun combination like Research & Development or name branding like H&M. Also, does the user know what a DataItem is?
I don’t know the whole flow, maybe you can give information to the user to where they will return to by activating the exit button. So it also depends on when this dialog is coming up. Is it routine procedure to exit and cancel, or will the dialog pop up when the user is doing a mistake.
What I would think about is going straight into UI perspective:
- A rounded Button is mostly used for CTA buttons (call to action) for prominent things like “Apply Now”, “Register” etc. so turning down the curvature already makes it less prominent.
- The buttons are very far away, check into the material design guidelines created by Google to see how you can place them to form a consistent button field.