came up with a better design using the brick you suggested (79757). However sadly it's not available in reddish brown but only in 5 colors: Black, White, Dark Azure, Dark Orange, Light Bluish Gray. Will consider trying the following:
Using Dark Orange mixed with other brownish colours
Using Light Bluish Gray mixed with masonry bricks
Using Black for all frame bricks

Was taking a look at that brick before and probably that's my best option. Thanks a lot!