Okay so i finally got on to play due to a start up bug anyway i decided i was gonna upgrade my builds with woods natural to the area so i got out my wood made into planks it worked but then i tried to make it into stairs and slabs but this happens.
(the wood in crafting and same colour wood staris and slabs)
http://gyazo.com/8800c8735a0448eab7511d03cf57e074
(but when i clicked the stairs it gives me a different colour i placed the stairs i got from it next to the plank on wood)
http://gyazo.com/5c0c2cbb24e12522e78ff4ddebbef005