List of NPC Costume Pieces and Database key

[Korbian]

After much trial and error, and a few educated guesses with help from the information above, I was finally able to put together a working and accurate Hand of Artemis costume.  So I'm sharing for those who might want to do the same.  (Note: The glow aura for the eyes is an invalid FX part, so it's better to fake it with an aura available in the tailor.  You can use whatever face/hair you like, though I have included the npc hair, and the npc face is the default tailor face.  I also had to use all 4 colors to get everything to come out right.):

Spoilered for space saving purposes.

Spoiler for Hidden:

Legs (part 0)
geometry  Tight
texture1  !hips_knives
texture2  knives_c
color1  -16777216
color2  -13541071
color3  0
color4  3231611

Chest (part 1)
geometry  Tight
texture1  !chest_knives
texture2  none
color1  -16777216
color2  -13541071
color3  0
color4  3231611

Gloves (part 3)
geometry  Smooth
texture1  !glove_knives
texture2  !glove_knives_c
color1  -14726344
color2  -13541071
color3  0
color4  3231611

Boots (part 4)
geometry  Smooth
texture1  !boot_knives_01
texture2  !boot_knives_01_c
color1  -14726344
color2  -16777216
color3  0
color4  3231611

Belt (part 5)
geometry  knives_belt.geo/GEO_belt_knives
texture1  !belt_knives_01
texture2  !belt_knives_01_c
color1  -14726344
color2  -16777216
color3  0
color4  3231611

Hair (part 6)(If you want different hair or different colors just leave this alone)
geometry  Style_03
texture1  Style_01a
texture2  Style_01b
color1  -8458511
color2  8318705
color3  0
color4  0

Chest Detail (part 9)
geometry  knives_emblem.geo/GEO_emblem_knives
texture1  !emblem_knives_01
texture2  !emblem_knives_01_c
color1  -14726344
color2  -16777216
color3  0
color4  3231611

Shoulders (part 10)
geometry  knives_spadr.geo/GEO_spadr_bow
texture1  !spadr_knives_bow
texture2  !spadr_knives_bow_C
color1  -1
color2  -16776961
color3  0
color4  3231611

Back (part 11)
geometry  knives_back.geo/GEO_back_knives
texture1  !back_knives_scabbard
texture2  none
color1  -14726344
color2  -16777216
color3  0
color4  3231611

Neck aka Detail 2 (part 13)
geometry  knives_neck.geo/GEO_neck_reaver
texture1  !neck_knives
texture2  none
color1  -16777216
color2  -13541071
color3  0
color4  3231611

Aura (part 18)(Not the illegal fx but rather the closest approximation)
geometry  none
fx  Auras/Female/Glow/GlowEyes.fx
texture1  none
texture2  none
color1  -16777185
color2  3236173
color3  0
color4  3236173

Okay, hopefully I got all those copied over correctly.  If you have any problems pm me and I'll see what I need to fix. 

[PownUnoobs]

The answer to both questions is editing paragonchat.db using a database editing program.
Before someone asks how... these programs are not very user friendly and it can be extremely difficult to diagnose over forums if and when mistakes were made.

Also, there are 3 costume pieces that aren't costume pieces on Recluse: his waist cape, his crab back pack, and his glow eyes. These are invalid FX that will make you invisible to others. You would need to edit them out to be seen.
I think PownUnoobs was working on translating my Recluse into a working costume file but I haven't checked.

It's in the drive folder I shared.  I also made some strides for Scirocco, Mako, and Black Scorpion

[Pengy]

Hero 1 Costume
"Clean" version of the Honoree
edit: Corrected the scales

skincolor -8081937
bodyscale 15.0
bonescale 0.0
shoulderscale 0.0
chestscale 0.251
waistscale -0.251
hipscale -0.168
legscale 0.02

part 0
geom Tight
tex1 !HIPS_tights
displayname None
region Lower Body
bodyset Tight
color1 -6075081
color2 -16777216
color3 0
color4 0

part 1
geom Tight
tex1 !CHEST_tights
displayname None
region Upper Body
bodyset Tight
color1 -6075081
color2 -16777216
color3 0
color4 0

part 2
geom V_MALE_HEAD.GEO/GEO_Head_V_Asym_Standard
tex1 !FACE_skin_head_01
displayname None
region Head
bodyset Full Masks
color1 -16777216
color2 -16777216
color3 0
color4 0

part 3
geom Smooth
tex1 !GLOVE_Skin_Sleeves
tex2 !GLOVE_Sleeve
displayname None
region Upper Body
bodyset Tight
color1 -6075081
color2 -16777216
color3 0
color4 0

part 4
geom V_MALE_BOOT.GEO/GEO_Lleg*_Boxer_Boot
tex1 !Boot_V_Boxer_01
tex2 !Boot_V_Boxer_01_Mask
displayname None
region Lower Body
bodyset Tight
color1 -11061465
color2 -11061465
color3 0
color4 0

part 5
geom Oval_Buckle
tex1 Tech_01a
tex2 Tech_01b
displayname None
region Upper Body
bodyset Tight
color1 -12774400
color2 -16741164
color3 0
color4 0

part 6
geom V_MALE_HAIR.GEO/GEO_Hair_Honoree_01
tex1 !Hair_V_Honoree_Helmet_02
displayname None
region Head
bodyset Full Masks
color1 -16777216
color2 -16777216
color3 0
color4 0

part 13
geom V_MALE_NECK.GEO/GEO_Neck_Honoree_02
tex1 !Neck_Honoree_02
displayname None
region Head
bodyset Full Masks
color1 -16777216
color2 -16777216
color3 0
color4 0

part 15
geom Over_Shoulder
tex1 Cape_Top_01
displayname None
region Capes
bodyset OverShoulderMantle
color1 -16777089
color2 -16777046
color3 0
color4 0

part 17
geom Over_Shoulder
fx capes/CapeOverShoulderMale.fx
tex1 !Cape_Union_Jack_01
displayname None
region Capes
bodyset OverShoulderMantle
color1 -1
color2 -1
color3 200
color4 200

[NJQuazar]

Do you have the Mother Mayhem Coat tail?

[Pengy]

Do you have the Mother Mayhem Coat tail?

This is what I get from Icon:

part 21
geom V_FEM_SLEEVES.GEO/GEO_Sleeves_Mother_Mayhem_01
fx NULL
tex1 !X_Sleeves_V_Mother_Mayhem_01
tex2 !Sleeves_V_Mother_Mayhem_01_Mask
region Upper_Body
bodyset Jackets
color1 -3789713
color2 -15461356
color3 16777215
color4 16777215

part 20
geom V_FEM_TOP.GEO/GEO_Jackets_Mother_Mayhem_01
fx capes/CapeLongMotherMayhem.fx
tex1 !X_Top_Mother_Mayhem_01
tex2 !Top_Mother_Mayhem_01_Mask
region Upper_Body
bodyset Jackets
color1 -15461356
color2 -15461356
color3 9183055
color4 0

part 8
geom V_FEM_Eyes.GEO/GEO_eyes_Mother_Mayhem_01
fx NULL
tex1 !X_eyes_Mother_Mayhem_01
tex2 !Top_Mother_Mayhem_01_Mask
region Head
bodyset Standard
color1 -16777216
color2 2656183
color3 0
color4 0

part 6
geom V_Fem_HAIR.GEO/GEO_Hair_Mother_Mayhem_01
fx NULL
tex1 !SF_Hair_Mother_Mayhem_01
tex2
region Head
bodyset Standard
color1 -16777216
color2 -16777216
color3 0
color4 0

part 5
geom V_FEM_BELT.GEO/Geo_Belt_Mother_Mayhem_01
fx NULL
tex1 !X_belt_V_Mother_Mayhem_01
tex2
region Upper_Body
bodyset Jackets
color1 -16777216
color2 -16777216
color3 0
color4 0

part 4
geom V_FEM_BOOT.GEO/GEO_LlegR_Mother_Mayhem_01
fx NULL
tex1 !X_boot_V_Mother_Mayhem_01
tex2 !boot_V_Mother_Mayhem_01_Mask
region Lower_Body
bodyset Tight
color1 -15461356
color2 -3789713
color3 0
color4 0

part 3
geom V_FEM_GLOVE.GEO/GEO_LArm*_Mother_Mayhem_01
fx NULL
tex1 !glove_V_Mother_Mayhem_01
tex2
region Upper_Body
bodyset Jackets
color1 -16777216
color2 -16777216
color3 0
color4 0

part 2
geom fem_HEAD.geo/GEO_HEAD_Standard
fx NULL
tex1 !Face_Skin_V_Mother_Mayhem_01
tex2
region Head
bodyset Standard
color1 -3789713
color2 -15461356
color3 0
color4 0

part 1
geom V_FEM_SHIRT.GEO/GEO_Chest_Mother_Mayhem_01
fx NULL
tex1 !X_Chest_V_Fem_Mother_Mayhem_01
tex2 !Chest_V_Fem_Mother_Mayhem_01_Mask
region Upper_Body
bodyset Jackets
color1 -14737633
color2 -3789713
color3 0
color4 0

part 0
geom V_Fem_Pants.GEO/GEO_Hips_Mother_Mayhem_01
fx NULL
tex1 !Hips_V_fem_Mother_Mayhem_01
tex2
region Lower_Body
bodyset Tight
color1 -16777216
color2 -16777216
color3 0
color4 0