To Gil: It is for a Dwarf Fortress visualiser called Stonesense. I realise a simpler style would probably work better, but then again it just a visualiser, and I suppose that it's me making a tileset for something I would like to see. Even if it doesnt fit well I can still call this practice! Since really this is my first attempt at a tile set

To buddy90: Thanks for the ref, if anything it gives me a good sense for palettes, but the constant repitition in the tiling in that is something that I really want to try to avoid.
To setz & Tourist: Honestly... I dont know why I chose blue, I just started with it mocking up, and kinda lost myself

I'm really torn between both your palette choices. I like the warmth that setz's gives, but on the other hand I like the cold feeling of the solid rock... so I'm really not sure which way to go. I'll keep messing around with palettes tomorrow.
But for now:

One using Tourists idea for the palette and the other with setz. This was working off the second mockup and also tried to smooth off the floor tiles to try to get to a more natural look, also lost the moss for a more simplistic look. I still think the contrast between faces isnt enough.. so like i said tomorrow is palette messing day!

Quick Update:

Tried smoothing the colour transition and removing the dithering after some concerns were brought up about conflicting style. Also tried upping the contrast between the faces, but I think It's looking too washed out now ><
Feels like this one isn't doing what I want it to

So fresh eyes tomorrow and I think its back to the drawing board. I think I'll really try to lose alot of the jutting stones and try for more of a smooth but still rugged look for the faces.