2 problems with your post. Your second video needs to be changed with this
https://www.youtube.com/watch?v=iEENNMUt6SI
Another problem in that video. When you initiate Noxian Might, the color should be blue not red. In between 00:12-00:14. You will see a faded red color once he is nearly finished with his 5 aa.
https://www.youtube.com/watch?v=ENkthjiEHtE
BUT in this video at 1:15- 1:18 you can see it in action so Riot already fixed it.
Your second video is outdated. Here is another video which you need to to replace it with.
https://www.youtube.com/watch?v=LgdfxY3Hx00
01:03- end of the video.
Now after reading my post, you should find the answer you are looking for and a solution to your question.
The reason why Woad is more clearer than any other skin is because Woad's particle colors are more lighter and clearer compared to the rest because they are more darker.