Dark Gray and Deep Red Dye Module
The Dark Gray and Deep Red Dye Module originally could be found on the Cartel Market, Cartel Packs or Dye Packs. Due to the random nature of Cartel Packs and Dye Packs, there is a low chance of receiving any specific dye from these packs, it is recommended to instead buy the Dark Gray and Deep Red Dye Module from the GTN from other players. This dye can also be bought directly from the Cartel Market for 240 CC.
When you use the Dark Gray and Deep Red Dye Module, it will dye the primary dye section of your armor Dark Gray, and the secondary part of your armor Deep Red.
All dye modules are one-use, so once you've added a Dark Gray and Deep Red Dye Module to your armor, you will not be able to remove it and reuse it later.
Underworld Reputation
A small number of Cartel Market dyes and other Cartel Market items can be purchased from vendors up on a platform in the Cartel Bazaar section of the Fleet, which is the Northern elevator Republic side and the Southern elevator Imperial side. Unfortunately, these items are also tied to the Underworld Exchange reputation track, which can only be increased by rare bound items that come from the older types of Cartel Packs that are no longer being sold. This type of reputation is now mostly deprecated, and does not drop from Ultimate Cartel Packs which is all that has been sold for years now.
Contraband Slot machine decoration: If you can find a stronghold that has the Contraband Slot Machine Decoration (unrelated to the current casino event), you can “play” it to win reputation items for the Underworld Exchange reputation track. It also has a rare chance of dropping Cartel Certificates. If your guild does not have one of these, check the publicly listed strongholds in the Strongholds & Crew Skills sections of the fleet and rich players may have one publicly available.
Have a suggestion or correction? Go to the Swtorista Website Discord and post your report in the #report-issue channel. You will need to make a free Discord account.
Comparison of Similar Dyes
These dyes are not quite the same as the Dark Gray and Deep Red Dye Module, but they have either Gray or Red in them. The Dark Gray and Deep Red Dye Module preview is on the left, and the other potentially similar dye is on the right.

OriginalComparison
Dark Blue and Deep Red Dye Module
Cartel MarketGTN

OriginalComparison
Deep Red and Dark Blue Dye Module
Cartel MarketGTN

OriginalComparison
Light Gray and Deep Blue Dye Module
Cartel MarketGTN

OriginalComparison
Pale Blue and Pale Gray Dye Module
Cartel MarketGTN

OriginalComparison
Dark Blue and Gray Dye Module
CraftingArtifice 620 / GTN

OriginalComparison
Gray and Dark Blue Dye Module
CraftingArtifice 620 / GTN

OriginalComparison
Ancient Warrior's Medium Red and Light Blue Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Ancient Warrior's Light Blue and Medium Red Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Deep Blue and Light Red Dye Module
Kai Zykkens Satchel of Dyes

OriginalComparison
Deep Gray and Pale Brown Dye Module
Cartel MarketGTN

OriginalComparison
Light Brown and Pale Gray Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Squad Officer's Brown and Gray Dye Module
Cartel MarketGTN / 360 CC

OriginalComparison
Outback Settler's Brown and Gray Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Pale Gray and Pale Brown Dye Module
Kai Zykkens Satchel of Dyes

OriginalComparison
Black and Medium Gray Dye Module
Cartel MarketGTN

OriginalComparison
Deck Officer Dye Module (Tan and Light Gray)
Cartel MarketGTN / 240 CC

OriginalComparison
Deep Gray and Black Dye Module
Cartel MarketGTN

OriginalComparison
Fleet Commander Dye Module (Tan and Medium Gray)
Cartel MarketGTN / 240 CC

OriginalComparison
Force Trainee Dye Module (Light Gray and Charcoal)
Cartel MarketGTN / 240 CC

OriginalComparison
Naval Officer Dye Module (Gray and Dark Gray)
Cartel MarketGTN / 600 CC

OriginalComparison
Primary Dark Gray Dye Module
Cartel MarketGTN

OriginalComparison
Secondary Dark Gray Dye Module
Cartel MarketGTN

OriginalComparison
Sith Apprentice Dye Module (Apprentice Charcoal and Apprentice Light Gray)
Cartel MarketGTN / 240 CC

OriginalComparison
Black and Light Gray Dye Module
CraftingArtifice 470 / GTN

OriginalComparison
Medium Gray and Medium Gray Dye Module
CraftingArtifice 520 / GTN

OriginalComparison
Pale Gray and Dark Gray Dye Module
CraftingArtifice 320 / GTN

OriginalComparison
Primary Medium Gray Dye Module
CraftingArtifice 120 / GTN

OriginalComparison
Secondary Medium Gray Dye Module
CraftingArtifice 40 / GTN

OriginalComparison
Wastelander Gray and Tan Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Emperor's Hand Light Gray and Dark Gray Dye Module
Cartel MarketGTN / 360 CC

OriginalComparison
Medium Gray and Dark Green Dye Module
Cartel MarketGTN

OriginalComparison
Medium Red and Medium Green Dye Module
Cartel MarketGTN

OriginalComparison
Dark Green and Deep Red Dye Module
CraftingArtifice 320 / GTN

OriginalComparison
Orange and Red Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Deep Orange and Deep Red Dye Module
Collector's Edition6,250 Credits

OriginalComparison
Pale Gray and Deep Orange Dye Module
CraftingArtifice 320 / GTN

OriginalComparison
Dark Pink and Dark Gray Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Deep Gray and Deep Pink Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Deep Pink and Deep Gray Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Light Gray and Pale Pink Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Vice Admiral's Purple and Grey Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Deep Gray and Dark Purple Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Deep Red and Dark Purple Dye Module
Cartel MarketGTN

OriginalComparison
Light Gray and Dark Purple Dye Module
Cartel MarketGTN

OriginalComparison
Medium Gray and Dark Purple Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Medium Purple and Dark Red Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Pale Purple and Medium Gray Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Dark Red and Medium Purple Dye Module
CraftingArtifice 370 / GTN

OriginalComparison
Dark Purple and Dark Red Dye Module
Kai Zykkens Satchel of Dyes

OriginalComparison
Dark Red and Light Red Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Dark Red and Pale Brown Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Dark Red and Pale Red Dye Module
Cartel MarketGTN

OriginalComparison
Deep Red and White Dye Module
Cartel MarketGTN

OriginalComparison
Emperor's Hand Dye Module (Emperor's Deep Red and Emperor's Charcoal)
Cartel MarketGTN

OriginalComparison
Honor Guard Red Dye Module (Bright Red and Deep Maroon)
Cartel MarketGTN / 240 CC

OriginalComparison
Mandalorian Scout Dye Module (Mandalorian Red and Dark Gray)
Cartel MarketGTN

OriginalComparison
Medium Red and Dark Gray Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Pale Red and Pale Brown Dye Module
Cartel MarketGTN

OriginalComparison
Primary Deep Red Dye Module
Cartel MarketGTN

OriginalComparison
Secondary Deep Red Dye Module
Cartel MarketGTN

OriginalComparison
Wayward Warrior Dye Module (Charcoal and Deep Red)
Cartel MarketGTN / 600 CC

OriginalComparison
White and Medium Red Dye Module
CraftingArtifice 470 / GTN

OriginalComparison
Black and Deep Red Dye Module
ReputationChampion, OriconArtifice 450 / GTNSchematic: 100,000 Credits

OriginalComparison
Dark Red and Black Dye Module
ReputationChampion, YavinArtifice 500 / GTNSchematic: 100,000 Credits

OriginalComparison
Deep Red and Black Dye Module
ReputationLegend, Section XArtifice 400 / GTNSchematic: 100,000 Credits

OriginalComparison
Deep Red and Light Gray Dye Module
ReputationLegend, MakebArtifice 400 / GTNSchematic: 100,000 Credits

OriginalComparison
Light Gray and Deep Red Dye Module
ReputationLegend, Galactic Solutions IndustryArtifice 400 / GTNSchematic: 100,000 Credits

OriginalComparison
Deep Brown and Deep Red Dye Module
ReputationArtifice 500 / GTN50 Completed Bounty Contracts

OriginalComparison
White and Deep Red Dye Module
Security Key Vendor5,000 Credits

OriginalComparison
Medium Gray and White Dye Module
Cartel MarketGTN

OriginalComparison
White and Medium Gray Dye Module
Cartel MarketGTN / 600 CC

OriginalComparison
White and Light Gray Dye Module
CraftingArtifice 520 / GTN

OriginalComparison
Deep Red and Deep Yellow Dye Module
Cartel MarketGTN

OriginalComparison
Medium Yellow and Deep Gray Dye Module
Cartel MarketGTN / 240 CC

OriginalComparison
Pale Gray and Dark Yellow Dye Module
Cartel MarketGTN

OriginalComparison
High Roller Grey and Gold Dye Module
Cartel MarketGTN / 360 CC