Hi Gumby, no ofcourse not.
you have to do it this way:
YELLOW RED GREEN ORANGE BLUE
RED GREEN YELLOW BLUE ORANGE
BLUE YELLOW RED ORANGE GREEN
this way, each word in a different colour (not highlighted) - and not each time the same colour for the same word. The more words, the more difficult.
When you are trying to speak it loud you will notice it IS difficult.
Has something to do with the left and right side of your brain: one half wil try to say the COLOUR, the other half the WORD.
try it again.