First off shout out to Striker15666 for making the Mecha Gunlance mod it truly is a work of art. I have done my best to keep his original style but just change the base blue color to others. This is just a recolor. Nothing else was modified.

What got me started was I loved the design but blue is not my favorite color. So I looked up texture mod tutorials on the modding wiki and did a few trial and error with the paint tool and finally figured out how to change the color. The first I did was black (cuz I'm an Edgelord/Goofball or Gooflord) and once it looked good I decided to make a few other colors for fun and to see if I could. So currently I have made Black, Red, Pink and Green. 

TlDR;
New colors for your MECHA FISTS OF AWESOME! Available at a mod site near you!
-Black
-Red
-Pink
-Green

Installation:
Download Mecha Gunlance https://www.nexusmods.com/monsterhunterworld/mods/3629
Install Mecha Gunlance
Download the color of your choice
Unzip my mod into your Monster Hunter World folder overwriting anything it asks to
Start punching things in the face with your MECHA FISTS OF AWESOME!

Future Plans:
Make the current and future colors a little more roughed up looking. Right now it looks pretty freshly painted compared to the original.
I would like to add some custom glowing colors but haven't quite figured that out yet
Make a Black/White with Gold fist colors. 
Maybe round out the base color options if people ask for them.