Installation:
1: Navigate to Steam\steamapps\common\Colony Survival\gamedata\mods
1-2: You can quickly do this by right clicking the game icon in Steam, clicking Properties, Local Files then Browse.

2: Extract the zip file into the Mods folder. You can close the loval files window now.

3: Launch the game and select your world, before pressing load, a small menu on the right side should list the mod under the name "Aginoka.minecraftblocks" click it to enable it and load the game.
3-2: The game will warn you about new mods, press load again if needed and the game should be themed once the world loads.

Have Fun!