Hi, Lesley
Janet Russell does a great version of this on her CD "Bright Shining Morning?" You really need to listen to her singing, in her Scottish accent, as it's very difficult to write the words the way she sings them. The nearest I can get is

Jeannie Jenkins

Oh, Mother, would I wear ma broon goon the day, oh?
No, I wouldna wear your broon, Jeanie Jenkins, oh.
No, I wouldna wear your broon for tae gan into toon
Chorus
And I'll buy ye a roly poly sugar alley hokey pokey whoops corduroy, Jeannie Jenkins, oh.
whoops corduroy, Jeannie Jenkins, oh.

Successive colours/verses then
green goon - green, it's na fit tae be seen
reed goon - reed, it's the colour o' ma bleed
yellow goon - yellow, for the colour's too mellow
white goon - white, for the colour's too bright
Last verse is
Oh, Mother, would I wear ma blue goon the day, oh?
Aye, I'd wear your blue, Jeannie Jenkins, oh.
I'll wear ma blue, Mother, just to please you.
And I'll buy ye a rolypoly sugar alley hokey pokey whoops corduroy, Jeannie Jenkins, oh,
whoops corduroy, Jeannie Jenkins, oh.