Is 'Colorado' English, or is it actually Spanish (USA)?

'Colorado' is a word borrowed from Spanish (USA) 'colorado'.

Colorado [geographical name] [(unknown)]

• river 1450 miles (2334 ) kilometers United States & Mexico rising in Colorado & flowing into Gulf of California
• river 600 miles (950 ) kilometers Texas flowing into Gulf of Mexico
• state area United States ✽ Denver square miles 104,247 square kilometers (271,042 ), pop 4,301,261
• river 530 miles (853 ) kilometers Argentina flowing cen to the Atlantic

See 'Colorado' on the Loan Words Map

See more loan words from Spanish (USA).

note: Named for the river Spanish Rio Colorado from colorado ruddy reddish literally colored past participle of colorar to color dye paint from Latin colorare to color - to get tanned.
Etymology: -

See more loan words from (unknown date).