If you use the original .tga files, then the size of your mod is ~176 MB (for the Soviets skins)
If you use the new or edited .tga files, then the size of your mod is ~270-370 MB (2-5 MB added per unoriginal file)
Because Modding hub limit is 200 MB, no one can publish a complete skin pack.
Except one man! Janne252. And he has no idea how he did it! But I have!
He used the original textures and didn't change anything except the tones and brightness! I don't know why but Mod builder thinks is the original files or something like that. This means you can publish mod with pink tanks but can't publish mod with new camouflage pattern.
Relic today updated Wiki, I did not notice it.
NOTE: If you are submitting to the curated pathway then your mod will be big as it will include your source files. This may cause you to hit the upload file size limit of 300MB. If this is the case try splitting your mod into summer and winter packs and upload each separately.