Can users modify the default format of [colors][1] in the front end? 

`Red`

[![enter image description here][2]][2]

For example, dimensions, aspect ratio, EdgeForm? The motivation is the functional convenience in data visualization application especially when combined w/ Row, Column etc as in this graphic fragment:

[![enter image description here][3]][3]

Here would like to compress the horizontal bar, eg

 `Table[Red, {5}] // Row` 

by changing `AspectRatio` from squares to thin rectangles, and decrease the thickness of `EdgeForm`. 

**EDIT**


Given 

    ds = {Red, Blue} 

Would like to achieve something like this but on the box form rather than `Graphics`, to avoid scaling and padding problems when interacting with `Row` and `Column`

    rectangleForm[w_, h_][c_] := 
      Graphics[{c, Rectangle[RoundingRadius -> 1/5]},
       AspectRatio -> (h/w), ImageSize -> {w, h}]; 

Then

    ds // Query[{Map[rectangleForm[10, 20]] /* Row, Map[rectangleForm[20, 10]] /* Row, Map[rectangleForm[20, 10]] /* Column}]

[![enter image description here][4]][4]

Note the unwanted spacing in the last pais using `Column`. Maybe this can be remedied by use of `ImagePadding` or related, but this takes effort to coordinate. 


  [1]: http://reference.wolfram.com/language/guide/Colors.html
  [2]: https://i.sstatic.net/jlx5d.png
  [3]: https://i.sstatic.net/q9MVz.png
  [4]: https://i.sstatic.net/RqZiM.png