If this is what You want

then follow next steps otherwise... ask again
-download this furniture
-import them in SH3D and then in 2D plan
-will look strange

It's a 3 in 1 furniture.
-right clik -> Modify furniture -> Materials:Modify

-on materials dialog

select which You don't need and make them invisible.
In this case I chose to keep 30 deg. Will look like this in the end

For this task I use the original furniture and modify them in AOI
P.S. Off course You can change the color(texture) and don't forget to use the mirror shape when You need.
Hope to be helpful and HAPPY NEW YEAR to Everibody [:o)]