Getting rid of the white overlay on elderly pets

Hello!

I'm trying to get rid of the white overlay the game automatically applies to elderly pets, because my old dog isn't nearly as "washed out" as the game seems to believe he is :D

I already tried using paint mode to paint over the white parts that get added, but it reverts to the elderly look as soon as I leave paint mode:



Recolored dog, looks just like my furry gramps


Then the game makes him overly white again :(

I looked through the tuning files and found the following, which seems to govern this behavior: CB5FDDC7!00000019!0000000000028CC2.trait_Pet_age_Elder.TraitTuning.xml since, on lines 33-41 the following can be found:


<L n="tags">
<E>TraitAge</E>
</L>
<E n="trait_type">HIDDEN</E>
<V n="vfx_mask" t="apply_vfx_mask">
<L n="apply_vfx_mask">
<E>MASK_ELDER</E>
</L>
</V>
Notice the apply_vfx_mask of type MASK_ELDER... I thought I had hit the jackpot!

But... Whether I replace MASK_ELDER with MASK_ADULT or even completely remove those lines, my elder pets still get the "white fur" overlay applied to them. I'm puzzled 

Does anyone have any idea about getting rid of this damn overlay or, better yet, have already done so and could point me in the right direction?

Any help would be greatly appreciated! 


[EDIT]: I don't think it matters much in this case, but my game version is 1.69.59.1020, with all the currently available packs.