Originally Posted by
Kathranis
Warcraft III and its expansion definitely took a lot of inspiration from the original novels. The blue-eyed undead and green fire are without a doubt inspired by the wights and wildfire. The title of the campaign chapter with the battle between Arthas and Illidan is even called "A Symphony of Frost and Flame," an obvious play on A Song of Ice and Fire.
That said, I'd also be shocked if the production for the show didn't look at the Wrath cinematic for inspiration. Especially the VFX studio. Gathering reference material is a huge part of that job.