It's an interesting fact that until fairly recently the Welsh words for blue and green were the same (glas). For example the Welsh word for grass is still glaswellt, which means 'blue straw'.
This isn't just because Welsh is weird (though it is), the same lack of distinction between green and blue has existed in a great many other languages. For more information you could start by reading this.
This isn't just because Welsh is weird (though it is), the same lack of distinction between green and blue has existed in a great many other languages. For more information you could start by reading this.