Felix, you've done a good job with the more "liquidy" design of the liquids. However, if you want my opinion, maybe attempt to blend the blobby type with the particle type. Currently, it looks a little too blobby. So yeah, thats the only improvement that could be made.
Anyways, you've done a great job, all of you have. Keep it up mate.
That what the "made them look even better" part comes in. They are now made so there is one pixel with the liquids color, then all pixels directly around it have an alpha value ranging from 40-50.
zc00gii did wonders with the uranium and plutonium tho. looks awesome.