I know that Mojang did a little research, but every frog I've seen is green or grey. Camouflage rules mean you need to be roughly the color of your environment, and most frogs follow that rule in real life. Except poisonous ones which I hope are added soon. Warm ones should be brown or orange to match deserts better, and the most common one should be green because most biomes are green. And of course the cold biome frog should be white. It makes sense to me. Froglights now match the frog that made them in Bedrock and Java.

Important Note: you need to unzip the folder, and use the appropriate version from inside.

If you want the copper buckets as shown in some of the preview images:
Java Version
Bedrock Version
They include changes to the recipe if you use datapacks or behavior packs.