Recolor zombies (Again)

Less ambitious but hopefully more reasonable. And compatible with the color scheme.

Crawling: Light green, red background -> green (Red background was reversed for zombies with "burning" status, blue for "stunned" status)
Survivor: Magenta, green background -> light red, green background (Similar to tough zombie (light red); the background indicate the "survivor" aspect beside the tough aspect).
Scientist: White -> white, cyan background (mostly cosmetic, a hint at the CBM)
Soldier: Green -> light green, green background (to differentiate him from fat and crawling)

Let's me know what you guys think about this, any suggestion is much appreciated. People with sight-trouble: if this recolor makes it worse for you, please let me know and I'll reconsider it.