Image block - Card format - change text background colour

Hi there,

I am trying to create a side by side image and text block. The easiest way seems to be using an image block with the card format. I would like to change the colour behind the text segment. There is already the ability to change the overlay colour for the image portion but I can t seem to find a way to change the text side. I may also need to indent the text to accomodate the colour.

I would like to find a non code solution if possible and make it a permanent change. I think this will be (at least in art) conducted in the 'colour' section of 'site styles'. This will be an image format that will be used regularly throughout the site.

Any help would be much appreciated. 

Hi. Can you share link to page in screenshot? We can help easier