Details:
Generated more MAOs and edited MMHs for wallhang props and a smaller double rug which is originally blue only and can be seen around Redcliffe Castle. There are 9 vanilla props called 'wallhang01-06' and 'wallhangf01-03'. The first three '01-03' are for short tapestries (green, red, blue), next three '04-06' - for long tapestries (green, red, blue) and 'f01-03' is another set of long tapestries (blue, red, green).

Smaller double rug is also a unique prop 'prp_carpl02' with its own mmh. All other big rugs have only one model per color, so no customization there. Well, technically you can turn, for example, all red rugs into blue ones by renaming 'prp_rugred_d/n/s' textures into 'prp_rugblue_d/n/s', but that's it.

You can check all 3 types of green tapestries in Highever Castle, blue ones - in Arl Eamon's Estate, red ones - in Fort Drakon. Also, feel free to mix some red with greens or green with blues (you still have to rename the files correctly, though).
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Installation:

1. Download Fancier Rugs and/or More Fancier Rugs. Unzip the archive somewhere not in your override directory.
Place the patterns you want (or none at all) as your big rugs into Documents\BioWare\Dragon Age\packages\core\override.
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2. If you want to change the color/pattern of smaller double rugs: extract the 'Smaller Double Rug' folder into the override, rename the textures of your choosing to prp_carpl02_d, prp_carpl02_n, prp_carpl02_s respectively and also drop them into override.
If there is no prp_..._s file for the rug of your choosing, copy and rename the vanilla _s specular file from this mod's folder 'vanilla prp_rugs' or else the rug will be too shiny!
Done!
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3. Decide whether you want your hanging tapestries to be all in one pattern, in two (one for short, another for long ones) or in three patterns (one for short, two for long ones) and extract the corresponding folder of this mod.

4. If you want all your tapestries in 1 pattern: place the folder 'Fancier Tapestries 1 color' into the override. Then choose one pattern from Fancier/More Fancier Rugs, rename DDS files into prp_wallhgreen1_d, prp_wallhgreen1_n, prp_wallhgreen1_s (and/or prp_wallhred1_d/n/s, prp_wallhblue1_d/n/s, depending on the original color of tapestry you want changed) and place in the override.

If you only want to change 1 or 2 of the vanilla tapestry colors, delete subfolders for the colors you don't want changed!
Use the list below to check which files to keep and delete.

If there is no prp_..._s file for the rug of your choosing, copy and rename the vanilla _s specular file from this mod's folder 'vanilla prp_rugs' or else the tapestries will be too shiny!
Done!
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5. If you want your tapestries in 2 or 3 patterns: extract the corresponding folder of this mod into the override. Choose which patterns you want from Fancier/More Fancier Rugs, rename DDS files and also drop them into override.

For 2-pattern tapestries use first six names for renaming, for 3-pattern tapestries - all 9 names as follows. I suggest dropping the files you rename into the subfolders to keep things in order.

prp_wallhang01 - short green -> prp_wallhgreen1_d/n/s
prp_wallhang02 - short red -> prp_wallhred1_d/n/s
prp_wallhang03 - short blue -> prp_wallhblue1_d/n/s

prp_wallhang04 - long green -> prp_wallhgreen2_d/n/s
prp_wallhang05 - long red -> prp_wallhred2_d/n/s
prp_wallhang06 - long blue -> prp_wallhblue2_d/n/s

prp_wallhangf_01 - another long blue -> prp_wallhblue3_d/n/s
prp_wallhangf_02 - another long red -> prp_wallhred3_d/n/s
prp_wallhangf_03 - another long green -> prp_wallhgreen3_d/n/s

If there is no prp_..._s file for the rug of your choosing, copy and rename the vanilla prp_ruggreen(blue/red)_s specular file from this mod's 'vanilla prp_rugs' folder or else the tapestries will be too shiny!

If you want some of 2-3 tapestries to keep the rug pattern - delete the corresponding subfolders from the 'Fancier Tapestries 2/3 colors' folder! Use the above list to see which ones to delete.
Done!
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Uninstallation:

Delete the 'Fancier Tapestries 1/2/3 colors' folder and all renamed prp_wallhgreen/red/blue... DDS files from the override at any time.
Delete the 'Smaller Double Rug' folder and all renamed prp_carpl02_d/n/s DDS files from the override at any time.
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Credits:

GuyVolker for Fancier and even More Fancier Rugs, perfect decorations for your castle!
Adinos for the DATool
Mephales for pyGFF editor
BioWare for the vanilla assets

Other mods in the screenshots:
Retcon Light Armor Texture Rehaul by hoarous
Triss preset from Witcher inspired morps by Jenya66