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Diablo 26 Skin by (sic) v0.4.1 - NO LONGER SUPPORTED

Custom dark skin/theme which enhances your Football Manager 26 experience.

By Updated on Nov 11, 2025   91593 views   54 comments
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Downloads: 13836 / Size: 86.8 MB / Added: 2025-11-04
Football Manager 2026 Skins - Diablo 26 Skin by (sic) v0.4.1 - NO LONGER SUPPORTED

THIS THEME IS NO LONGER SUPPORTED. IT DOES NOT WORK.

I just don't have the time to update this every single week, when SI update their game. Don't expect any updates until SI make custom skins possible, or until someone in the community manages to make skins a reality.



From the creator of Livid skins for previous FMs, the new Diablo 26 skin brings back the sleek dark theme - this time with red accents!

Currently, this is more of a custom theme than an actual skin with custom panels.
Together with people over at SI Forums and Discord, we managed to figure out how to change various colours, backgrounds, etc. Some of it was easier, some of it was difficult to find - but at this moment, I feel this first version of the skin is ready to be released!

With time, there will be updates - this is the earliest version of the skin.
There are many talented people in the modding community working hard to make this process easier for everyone - so I'm confident that very soon there will be more possibilities in terms of modding.


Notes


- Please note that this skin is primarily made for personal use. I understand everyone has different preferences, in regards to backgrounds, colors used, etc.
I will look to help out as much as I can, but please understand I can't accommodate everyone's preferences.

- Please also note that currently, some UI mods might not work together - if they replace the same file. This will most probably be changed soon with custom mods.

- Unfortunately, there seem to be issues with Mac. To my understanding this is due to how the files are bundled or compiled on Windows vs Mac - and it's something completely out of my control at this moment. Some files will work, some won't.


Backgrounds

Currently, the skin has overlays dependent on the competition you are in - just like the default game.
If you want to have the same default background, without these overlays, I will post a file here that you will need to replace.
Coming soon.


Diablo FM26 Screenshots


















Additional Features

Currently, this skin includes custom attribute colors, with custom attribute ranges.

Updates

v.0.4.1 - Small tweaks to one of the attribute color presets.
- Removed certain files that were causing issues on Mac. Please note that the skin won't look 100% the same on Windows and Mac due to this.

v0.4 - Added multiple attribute preset color ranges, including a totally transparent one for everyone who likes to play attribute-less!
- Small tweaks to key/preferable attribute highlight.
- Small tweaks to table visuals.
- Separated Windows and Mac into 2 folders, to hopefully avoid any issues/crashes caused by one of the files on MACs.

v0.3 - Fixed the issue with player instructions not appearing.
- Added dark background option, without competition graphics.

v0.2 - Fixed the skin to work with the new update.


How to Install the Diablo Skin on FM 26


1. Extract the contents of the downloaded file.
You'll get 6 files inside the Windows folder:
  • ui-datacollections_assets_all.bundle
  • ui-preferences_assets_all.bundle
  • ui-styles_assets_common.bundle
  • ui-styles_assets_default.bundle
  • ui-tactics_assets_all.bundle
  • ui-widgets_assets_all.bundle
There will also be folder called "Backgrounds". Simply navigate to whichever option you prefer, and copy the ui-backgrounds_assets_common.bundle - file into the same folder as other files.

Mac folder will have a file less (ui-tactics_assets_all.bundle is not included as it seems to cause issues on Mac).


2. Locate the Game Directory: Navigate to your Football Manager installation directory.
The standard path for Windows is typically:
\Steam\steamapps\common\Football Manager 26\fm_Data\StreamingAssets\aa\StandaloneWindows64\
And for Mac:
~/Library/Application Support/Steam/steamapps/common/Football Manager 26/fm.app/Contents/Resources/Data/StreamingAssets/aa/StandaloneOSX

3. Locate the original files (SEE ABOVE) in the game's data folder and make a backup copy before proceeding.

4. Copy and paste the files into the game directory. When asked, choose to overwrite/replace the existing files.

5. Enjoy!

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Downloads: 13836 / Size: 86.8 MB / Added: 2025-11-04
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Discussion: Diablo 26 Skin by (sic) v0.4.1 - NO LONGER SUPPORTED

54 comments have been posted so far.

  • serkanedabasar78's avatar
    How do I change the colors of player attributes to my liking?
    1
  • Entreaty's avatar
    @daveo72

    Hi, yes this appears to be a Mac issue. Unsure why it happens, but some users have narrowed it down to 2 files - ui widgets and ui tactics. You can try using the skin without those 2 files.
  • daveo72's avatar
    I'm having issues with the custom skins on Mac. There are currently 3 out there so this could be user error but I'm following the guide. When I install the files and start the game initially it looks ok however the load game button is blank. Then in game all the top menu tabs show as 'ITEM' and there is no drop downs available. Is this an issue with Mac's?
  • Entreaty's avatar
    Thanks everyone.

    @Manager34 - you can, but only the default preset is "finished" - I will post an update today that fixes the other 3 presets as well.

    @Saran1991 - are you using the new beta release? If not, then you might need to wait for the patch to officially drop.

    @dosh - thanks - yes, something like that is planned - I will post a few versions of the BG.

    @luckyluke26 - Thanks. I'm not exactly sure what exactly that is, and if I haven't noticed it yet - I probably am not going to update it any time soon :D
  • luckyluke26's avatar
    Hi, color of the skin is amazing :) Is there possible to delete coloring from competition list boxes in fixture list ?
  • dosh's avatar
    Absolutely love the skin — the black and red contrast looks fantastic!

    Just a small suggestion: could you maybe add a version with a solid black background instead of the grass one?

    Thanks again for your awesome work. Really appreciate the effort you’ve put into this!
  • KaiHavertzEnthusiast's avatar
    Thank you for the sick skin Bro.
  • Saran1991's avatar
    V0.2 All attributes are displayed in white (no colour grading)
  • Manager34's avatar
    You guys are heroes for fixing it that fast.

    I can use the 4 new presets for attributes colours which are in the game since the update even with your skin, right? Or would that cause any problems?
  • Entreaty's avatar
    @ravagesilence - Yep...that will be a reality for some time.

    For now, it is fixed!
  • ravagesilence's avatar
    Latest update has broken skins and that's all skins.
  • Entreaty's avatar
    Hi Clemns, thank you.

    So it's both of these files after all? This is really strange.

    For now I will put a disclaimer not to use these 2 files if you're on MAC, but I don't think there's much I can do - until SI fix the game.
  • Clemns's avatar
    Hello, I tested it on Mac with a different skin, but I encountered an issue with two files that seem to be causing the game to glitch, resulting in either an error or the disappearance of text. The two files are "ui-widgets_assets_all" and "ui-tactics_assets_all". I hope this information helps you with your work.
    1
  • Entreaty's avatar
    @xtrexpt - That is an issue on the game's end.

    @Vinish0w - You can change the ranges, yes. This is located in ui-datacollections_assets_all.bundle - file: AttributeDataCollection

    You'll see an array with 7 items, from -1 to 20. I have added an additional colour range to my skin, but you can remove it. When doing so, please remember to update the number of items in the array.
    0 int data = 17 - this means this range ends at 17, from 18 onwards it will be a different color.
  • Vinish0w's avatar
    Hey, so. I managed to edit the attribute colors and stuff with the program mentioned, but I'm really interested in changing the attribute range, since in this skin (or in the game, I don't know), there are 6 ranges and in 24, as far as I remember, there were only 4.
    I would like to change it to 1-5, 6-10, 11-15 and 16-20. How do I do that? For now, just changing the colors makes the range 1-5, 6-8, 9-11, 12-15, 16-17, 18-20 I guess. And I'm basically using 2 ranges of the same color to make 9-15 all yellow... but my intention was to return the range to how it was before by removing some, or to be able to change the values.
  • Vinish0w's avatar
    great
  • xtrexpt's avatar
    Very cool skin. The preview player tooltip is not working. Will you fix it? I like it a lot the skin. I just need to change the attributes colors
  • Entreaty's avatar
    @Lacerda

    Thanks mate. It is possible to change that.

    ui-styles_assets_default.bundle - there's a file inside FMColours, near the bottom, there are 6 color values (from [175]-[180]) that control each range. You can modify each r g b a value to whatever you want.

    I'm using UABEA to open these bundled files, and edit files within.

    Hopefully there will be a better way to do all of this, and more easier for regular users as well. After all, we are in very early stages of skinning/modding.
    I wouldn't have even released the skin until we actually got the tools to make separate skin folders, and until it was easier for all of you to make any tweaks to it you would like - but I know many people are very unhappy with how the game looks by default.
  • Entreaty's avatar
    @AlexThe7

    Hmm...it could be the custom attributes doing something, but I just do not understand why it would mess with that part of the UI, and only on Mac at that... Possibly a bug within the game itself, that was triggered by some of the changes I made.
    If you want to double-check, you can go file by file, to pin point which one of those 3 is making the issue, so I can see if I can modify it.
  • Lacerda's avatar
    Loved the skin! As said before, the background and color attributtes will always be about preference. For me for example i'm fine with the background, but the colors i have mixed feelings... Loved the idea of 18-20 being light blue, never thought of that before. But for me i would put 11-9 (no joke intended ) as white. Is it even possible for us that downloaded the skin to change the colors (not colors range)? Thank you!
  • AlexThe7's avatar
    @Entreaty, Did that and it still crashed, but I also left the old ui-datacollections_assets_all.bundle and the ui-widgets_assets_all.bundle along with the ui-tactics_assets_all.bundle... and it now works just fine I think....
  • Entreaty's avatar
    @AlexThe7

    Hi mate, not sure what this could be - as it seems to be only affecting mac PCs.

    Can you try to install the skin, without ui-tactics_assets_all.bundle - file? Or rather, if you have backed up the files, just replace that one to the default/backed up file - to see if it works.
  • AlexThe7's avatar
    Hey, love the skin but unfortunately when I instal it on my Mac, my game crashes after loading up the save and trying to go to a different screen other than the Portal (the tactics screen for example). I can progress days but not go to a different screen.

    I do not know if this helps, but I have installed other skins and did not have the same issue.

    Could you help me with that?
  • Entreaty's avatar
    @kfnielsen

    Hi. Thank you.

    Unfortunately, this won't work if you use a third-party tool to change colors.

    Currently, the way "skins" work, is that they replace entire .bundle files. These bundles contain several different files inside, but right now third-party tools (like attribute color picker) cannot replace only 1 file inside (let alone a line of code) - instead they replace the entire bundle.

    These tools also either use their own custom naming for each attribute color, or they use certain colors that already exist in the game - both of which are different to the way it works on my end.


    As I have mentioned in the post, some UI mods might not work together. We are still in very early stages of customization and modding.
    1
  • kfnielsen's avatar
    Hello
    Lovely skin
    One question though
    Why cant I change the attribute colors?
    When I use my own they just go white

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