Examples of what can be done with RGB Planks
Think minecraft is lacking variety in it's wood types? Want more, but don't want to look for any biome mods that fit your needs? Well, just take the RGB Plank, colour it in any wood (-or not-) colour you want and have every wood type you need!
All current block types
(Outdated)
Prismarine! Yes!
You can now access all the blocks from the prismarine family, fresh out of the ocean. Have a look at them here.
Different shades of cyan
Cyan Dye not enough? Well, this should do the trick.
Beacons of different hues
Yes, the RGB Glass works with the beacons without any problems!
Underwater Prismarine Ruins
RGB Prismarine in it's natural habitat, fresh - still in the ocean... Create a wonderful variety of prismarine buildings, structures, whatever you wish!
Some cool colourful stuff
A rainbow coloured... something and some colourful glass