You can change the control type as text instead of control and that will do this job.
and add styles that removes the broders from textbox.
Do you mean of read-only style? https://docs.mendix.com/refguide/data-view#editability
If you set the background-color on the textarea, the whole area including the label gets this color. The reason the input area does not get the background-color, is that this is superceded by the background-color set by the form-control class. See the pictures below.
One way to go would be to create a custom textarea class, add this class to the textarea and style the textarea there. Something like this:
Do you also know how to change the background-colour of the Textarea? We have tried Class and Style in the properites, but it has no impact?