I don't see any photos from the Play Store showing the blue icon, for me it shows up using the red icon instead. Here is a screenshot of the Google Play Store app (click the white blank image, it glitches out for some reason):
On the 1.2.1 update, there were no changes on Biollante's codex bio, it still shows up as "Biollante (Plant Form)". She is the only monster that still has a typo error in her name.