[yori]

Example code on the website:

  10 MODE 2
  20 COLOUR RND(7)
  30 PRINT "HELLO WORLD"
  40 GOTO 20

Happy to see "colour" spelled the English way. :-)

[speps]

You should have use "spelt" then :-)

[mrob]

"Spelled" is more common now even in British English. E.g. compare a Google search of 'site:bbc.co.uk "spelt"' with 'site:bbc.co.uk "spelled"'. Most recent usage of "spelt" is referring to the grain, or a direct quote of somebody who prefers the old-fashioned spelling.