Here is a Wikipedia article commenting on "or" vs. "our". Colour - British English Color - American English the only different. Meaning of both are same. read more
• Color is the American English spelling while colour is the British English spelling. • Both color and colour mean tint or paint. • Adjective of colour is colourful; adjective of color is colorful. • Adverb of colour is coloured; adverb of color is colored. These are the differences between the words colour and color. read more
The world was adopted directly into Middle English as colur; later colour from the Old French color, culur, colur; later colour; and finally coulour, which was the preferred Anglo-French spelling. Colour was eventually standardized in post Anglo-French English. read more